161153166537 has 24 divisors (see below), whose sum is σ = 259843872288. Its totient is φ = 95397220800.

The previous prime is 161153166523. The next prime is 161153166557. The reversal of 161153166537 is 735661351161.

161153166537 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 53 + 1 + 66 + 537 = 666.

It is not a de Polignac number, because 161153166537 - 2¹⁴ = 161153150153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161153166492 and 161153166501.

It is not an unprimeable number, because it can be changed into a prime (161153166557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18923764 + ... + 18932277.

It is an arithmetic number, because the mean of its divisors is an integer number (10826828012).

Almost surely, 2^161153166537 is an apocalyptic number.

It is an amenable number.

161153166537 is a deficient number, since it is larger than the sum of its proper divisors (98690705751).

161153166537 is a wasteful number, since it uses less digits than its factorization.

161153166537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37856101 (or 37856098 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The spelling of 161153166537 in words is "one hundred sixty-one billion, one hundred fifty-three million, one hundred sixty-six thousand, five hundred thirty-seven".