161036251145 has 48 divisors (see below), whose sum is σ = 246584834496. Its totient is φ = 99831312000.

The previous prime is 161036251099. The next prime is 161036251157. The reversal of 161036251145 is 541152630161.

It is not a de Polignac number, because 161036251145 - 2⁸ = 161036250889 is a prime.

It is a super-2 number, since 2×161036251145² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 322730 + ... + 652860.

It is an arithmetic number, because the mean of its divisors is an integer number (5137184052).

Almost surely, 2^161036251145 is an apocalyptic number.

It is an amenable number.

161036251145 is a deficient number, since it is larger than the sum of its proper divisors (85548583351).

161036251145 is a wasteful number, since it uses less digits than its factorization.

161036251145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330342 (or 330335 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 161036251145 in words is "one hundred sixty-one billion, thirty-six million, two hundred fifty-one thousand, one hundred forty-five".