87807396737 has 2 divisors, whose sum is σ = 87807396738. Its totient is φ = 87807396736.

The previous prime is 87807396731. The next prime is 87807396757. The reversal of 87807396737 is 73769370878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87615408001 + 191988736 = 295999^2 + 13856^2 .

It is a cyclic number.

It is not a de Polignac number, because 87807396737 - 2³⁶ = 19087920001 is a prime.

It is not a weakly prime, because it can be changed into another prime (87807396731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43903698368 + 43903698369.

It is an arithmetic number, because the mean of its divisors is an integer number (43903698369).

Almost surely, 2^87807396737 is an apocalyptic number.

It is an amenable number.

87807396737 is a deficient number, since it is larger than the sum of its proper divisors (1).

87807396737 is an equidigital number, since it uses as much as digits as its factorization.

87807396737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74680704, while the sum is 65.

The spelling of 87807396737 in words is "eighty-seven billion, eight hundred seven million, three hundred ninety-six thousand, seven hundred thirty-seven".