161167215120657 has 16 divisors (see below), whose sum is σ = 221901710548992. Its totient is φ = 103941270110160.

The previous prime is 161167215120619. The next prime is 161167215120673. The reversal of 161167215120657 is 756021512761161.

It is not a de Polignac number, because 161167215120657 - 2¹⁸ = 161167214858513 is a prime.

It is a super-2 number, since 2×161167215120657² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161167215120607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312894243 + ... + 313408904.

It is an arithmetic number, because the mean of its divisors is an integer number (13868856909312).

Almost surely, 2^{161167215120657} is an apocalyptic number.

It is an amenable number.

161167215120657 is a deficient number, since it is larger than the sum of its proper divisors (60734495428335).

161167215120657 is a wasteful number, since it uses less digits than its factorization.

161167215120657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626305948.

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 161167215120657 in words is "one hundred sixty-one trillion, one hundred sixty-seven billion, two hundred fifteen million, one hundred twenty thousand, six hundred fifty-seven".