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66437417470 = 2529229094543
BaseRepresentation
bin111101110111111110…
…101000100111111110
320100111010201111101111
4331313332220213332
52042030434324340
650304304232234
74541244505444
oct756776504776
9210433644344
1066437417470
11261a3210096
1210a6190b67a
13635a338758
143303806b94
151adc990aea
hexf77fa89fe

66437417470 has 16 divisors (see below), whose sum is σ = 123711053760. Its totient is φ = 25658588704.

The previous prime is 66437417467. The next prime is 66437417491. The reversal of 66437417470 is 7471473466.

It is a super-2 number, since 2×664374174702 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114546982 + ... + 114547561.

It is an arithmetic number, because the mean of its divisors is an integer number (7731940860).

Almost surely, 266437417470 is an apocalyptic number.

66437417470 is a deficient number, since it is larger than the sum of its proper divisors (57273636290).

66437417470 is a wasteful number, since it uses less digits than its factorization.

66437417470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229094579.

The product of its (nonzero) digits is 2370816, while the sum is 49.

The spelling of 66437417470 in words is "sixty-six billion, four hundred thirty-seven million, four hundred seventeen thousand, four hundred seventy".

Divisors: 1 2 5 10 29 58 145 290 229094543 458189086 1145472715 2290945430 6643741747 13287483494 33218708735 66437417470