161662084472625 has 32 divisors (see below), whose sum is σ = 293460772984704. Its totient is φ = 78381616712000.

The previous prime is 161662084472611. The next prime is 161662084472639. The reversal of 161662084472625 is 526274480266161.

It is an interprime number because it is at equal distance from previous prime (161662084472611) and next prime (161662084472639).

It is not a de Polignac number, because 161662084472625 - 2²⁶ = 161662017363761 is a prime.

It is a super-2 number, since 2×161662084472625² (a number of 29 digits) contains 22 as substring.

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, 19595400054 + ... + 19595408303.

It is an arithmetic number, because the mean of its divisors is an integer number (9170649155772).

Almost surely, 2^{161662084472625} is an apocalyptic number.

161662084472625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161662084472625 is a deficient number, since it is larger than the sum of its proper divisors (131798688512079).

161662084472625 is a wasteful number, since it uses less digits than its factorization.

161662084472625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39190808386 (or 39190808376 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 60.

The spelling of 161662084472625 in words is "one hundred sixty-one trillion, six hundred sixty-two billion, eighty-four million, four hundred seventy-two thousand, six hundred twenty-five".