87980233157 has 2 divisors, whose sum is σ = 87980233158. Its totient is φ = 87980233156.

The previous prime is 87980233079. The next prime is 87980233169. The reversal of 87980233157 is 75133208978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87976898881 + 3334276 = 296609^2 + 1826^2 .

It is a cyclic number.

It is not a de Polignac number, because 87980233157 - 2¹⁶ = 87980167621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87980233099 and 87980233108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87980233177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43990116578 + 43990116579.

It is an arithmetic number, because the mean of its divisors is an integer number (43990116579).

Almost surely, 2^87980233157 is an apocalyptic number.

It is an amenable number.

87980233157 is a deficient number, since it is larger than the sum of its proper divisors (1).

87980233157 is an equidigital number, since it uses as much as digits as its factorization.

87980233157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 87980233157 in words is "eighty-seven billion, nine hundred eighty million, two hundred thirty-three thousand, one hundred fifty-seven".