161915446970 has 64 divisors (see below), whose sum is σ = 313702502400. Its totient is φ = 59977604160.

The previous prime is 161915446939. The next prime is 161915446997. The reversal of 161915446970 is 79644519161.

It is a super-3 number, since 3×161915446970³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7481465 + ... + 7503075.

It is an arithmetic number, because the mean of its divisors is an integer number (4901601600).

Almost surely, 2^161915446970 is an apocalyptic number.

161915446970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161915446970 is a deficient number, since it is larger than the sum of its proper divisors (151787055430).

161915446970 is a wasteful number, since it uses less digits than its factorization.

161915446970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22523.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 161915446970 in words is "one hundred sixty-one billion, nine hundred fifteen million, four hundred forty-six thousand, nine hundred seventy".