161456206120 has 32 divisors (see below), whose sum is σ = 396301597920. Its totient is φ = 58711347520.

The previous prime is 161456206117. The next prime is 161456206133. The reversal of 161456206120 is 21602654161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183472522 + ... + 183473401.

It is an arithmetic number, because the mean of its divisors is an integer number (12384424935).

Almost surely, 2^161456206120 is an apocalyptic number.

161456206120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161456206120 is an abundant number, since it is smaller than the sum of its proper divisors (234845391800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161456206120 is a wasteful number, since it uses less digits than its factorization.

161456206120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366945945 (or 366945941 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 161456206120 in words is "one hundred sixty-one billion, four hundred fifty-six million, two hundred six thousand, one hundred twenty".