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131537536970 = 25722571044529
BaseRepresentation
bin111101010000000111…
…1111000011111001010
3110120112002002012211112
41322200033320133022
54123342102140340
6140232201530322
712334423421300
oct1724017703712
9416462065745
10131537536970
115086a568444
12215ab7a39a2
13c5335aa518
14651b780270
15364cd25065
hex1ea03f87ca

131537536970 has 48 divisors (see below), whose sum is σ = 276495447240. Its totient is φ = 44923060224.

The previous prime is 131537536967. The next prime is 131537536993. The reversal of 131537536970 is 79635735131.

It can be written as a sum of positive squares in 4 ways, for example, as 131341732921 + 195804049 = 362411^2 + 13993^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396335 + ... + 648194.

Almost surely, 2131537536970 is an apocalyptic number.

131537536970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131537536970 is an abundant number, since it is smaller than the sum of its proper divisors (144957910270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131537536970 is a wasteful number, since it uses less digits than its factorization.

131537536970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044807 (or 1044800 counting only the distinct ones).

The product of its (nonzero) digits is 1786050, while the sum is 50.

The spelling of 131537536970 in words is "one hundred thirty-one billion, five hundred thirty-seven million, five hundred thirty-six thousand, nine hundred seventy".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 257 490 514 1285 1799 2570 3598 8995 12593 17990 25186 62965 125930 1044529 2089058 5222645 7311703 10445290 14623406 36558515 51181921 73117030 102363842 255909605 268443953 511819210 536887906 1342219765 1879107671 2684439530 3758215342 9395538355 13153753697 18791076710 26307507394 65768768485 131537536970