161216656053 has 16 divisors (see below), whose sum is σ = 227876593536. Its totient is φ = 101032611840.

The previous prime is 161216656033. The next prime is 161216656057. The reversal of 161216656053 is 350656612161.

It is not a de Polignac number, because 161216656053 - 2⁹ = 161216655541 is a prime.

It is a super-2 number, since 2×161216656053² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161216655996 and 161216656014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161216656057) 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, 1878508 + ... + 1962453.

It is an arithmetic number, because the mean of its divisors is an integer number (14242287096).

Almost surely, 2^161216656053 is an apocalyptic number.

It is an amenable number.

161216656053 is a deficient number, since it is larger than the sum of its proper divisors (66659937483).

161216656053 is a wasteful number, since it uses less digits than its factorization.

161216656053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841804.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 161216656053 in words is "one hundred sixty-one billion, two hundred sixteen million, six hundred fifty-six thousand, fifty-three".