87882979057 has 2 divisors, whose sum is σ = 87882979058. Its totient is φ = 87882979056.

The previous prime is 87882979043. The next prime is 87882979081. The reversal of 87882979057 is 75097928878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85216702561 + 2666276496 = 291919^2 + 51636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87882979057 is a prime.

It is not a weakly prime, because it can be changed into another prime (87882979157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43941489528 + 43941489529.

It is an arithmetic number, because the mean of its divisors is an integer number (43941489529).

Almost surely, 2^87882979057 is an apocalyptic number.

It is an amenable number.

87882979057 is a deficient number, since it is larger than the sum of its proper divisors (1).

87882979057 is an equidigital number, since it uses as much as digits as its factorization.

87882979057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142248960, while the sum is 70.

The spelling of 87882979057 in words is "eighty-seven billion, eight hundred eighty-two million, nine hundred seventy-nine thousand, fifty-seven".