87261562757 has 2 divisors, whose sum is σ = 87261562758. Its totient is φ = 87261562756.

The previous prime is 87261562691. The next prime is 87261562823. The reversal of 87261562757 is 75726516278.

It is a balanced prime because it is at equal distance from previous prime (87261562691) and next prime (87261562823).

It can be written as a sum of positive squares in only one way, i.e., 58242099556 + 29019463201 = 241334^2 + 170351^2 .

It is a cyclic number.

It is not a de Polignac number, because 87261562757 - 2¹² = 87261558661 is a prime.

It is a super-2 number, since 2×87261562757² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87261562357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43630781378 + 43630781379.

It is an arithmetic number, because the mean of its divisors is an integer number (43630781379).

Almost surely, 2^87261562757 is an apocalyptic number.

It is an amenable number.

87261562757 is a deficient number, since it is larger than the sum of its proper divisors (1).

87261562757 is an equidigital number, since it uses as much as digits as its factorization.

87261562757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9878400, while the sum is 56.

The spelling of 87261562757 in words is "eighty-seven billion, two hundred sixty-one million, five hundred sixty-two thousand, seven hundred fifty-seven".