161611100500153 has 2 divisors, whose sum is σ = 161611100500154. Its totient is φ = 161611100500152.

The previous prime is 161611100500067. The next prime is 161611100500177. The reversal of 161611100500153 is 351005001116161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158645788948089 + 2965311552064 = 12595467^2 + 1722008^2 .

It is a cyclic number.

It is not a de Polignac number, because 161611100500153 - 2⁴¹ = 159412077244601 is a prime.

It is a super-2 number, since 2×161611100500153² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161611100500183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80805550250076 + 80805550250077.

It is an arithmetic number, because the mean of its divisors is an integer number (80805550250077).

Almost surely, 2^{161611100500153} is an apocalyptic number.

It is an amenable number.

161611100500153 is a deficient number, since it is larger than the sum of its proper divisors (1).

161611100500153 is an equidigital number, since it uses as much as digits as its factorization.

161611100500153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 31.

The spelling of 161611100500153 in words is "one hundred sixty-one trillion, six hundred eleven billion, one hundred million, five hundred thousand, one hundred fifty-three".