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145210461656 = 23131396254439
BaseRepresentation
bin1000011100111100110…
…1111100110111011000
3111212210222002202102112
42013033031330313120
54334342334233111
6150413032051452
713330310362421
oct2071715746730
9455728082375
10145210461656
115664657a0a7
1224186833b88
13109021cb8c0
147057636648
153b9d39be8b
hex21cf37cdd8

145210461656 has 16 divisors (see below), whose sum is σ = 293213432400. Its totient is φ = 67020213024.

The previous prime is 145210461619. The next prime is 145210461667. The reversal of 145210461656 is 656164012541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698127116 + ... + 698127323.

It is an arithmetic number, because the mean of its divisors is an integer number (18325839525).

Almost surely, 2145210461656 is an apocalyptic number.

It is an amenable number.

145210461656 is an abundant number, since it is smaller than the sum of its proper divisors (148002970744).

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

145210461656 is a wasteful number, since it uses less digits than its factorization.

145210461656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396254458 (or 1396254454 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 145210461656 in words is "one hundred forty-five billion, two hundred ten million, four hundred sixty-one thousand, six hundred fifty-six".

Divisors: 1 2 4 8 13 26 52 104 1396254439 2792508878 5585017756 11170035512 18151307707 36302615414 72605230828 145210461656