187039526895961 has 2 divisors, whose sum is σ = 187039526895962. Its totient is φ = 187039526895960.

The previous prime is 187039526895929. The next prime is 187039526895971. The reversal of 187039526895961 is 169598625930781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119667606254361 + 67371920641600 = 10939269^2 + 8208040^2 .

It is an emirp because it is prime and its reverse (169598625930781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 187039526895961 - 2⁵ = 187039526895929 is a prime.

It is a super-2 number, since 2×187039526895961² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (187039526895971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93519763447980 + 93519763447981.

It is an arithmetic number, because the mean of its divisors is an integer number (93519763447981).

Almost surely, 2^{187039526895961} is an apocalyptic number.

It is an amenable number.

187039526895961 is a deficient number, since it is larger than the sum of its proper divisors (1).

187039526895961 is an equidigital number, since it uses as much as digits as its factorization.

187039526895961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1763596800, while the sum is 79.

The spelling of 187039526895961 in words is "one hundred eighty-seven trillion, thirty-nine billion, five hundred twenty-six million, eight hundred ninety-five thousand, nine hundred sixty-one".