161902926356 has 12 divisors (see below), whose sum is σ = 286513606260. Its totient is φ = 80041896000.

The previous prime is 161902926343. The next prime is 161902926373. The reversal of 161902926356 is 653629209161.

It can be written as a sum of positive squares in 2 ways, for example, as 111756490000 + 50146436356 = 334300^2 + 223934^2 .

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, 227391395 + ... + 227392106.

It is an arithmetic number, because the mean of its divisors is an integer number (23876133855).

Almost surely, 2^161902926356 is an apocalyptic number.

It is an amenable number.

161902926356 is a deficient number, since it is larger than the sum of its proper divisors (124610679904).

161902926356 is a wasteful number, since it uses less digits than its factorization.

161902926356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454783594 (or 454783592 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 161902926356 in words is "one hundred sixty-one billion, nine hundred two million, nine hundred twenty-six thousand, three hundred fifty-six".