87711626731 has 2 divisors, whose sum is σ = 87711626732. Its totient is φ = 87711626730.

The previous prime is 87711626711. The next prime is 87711626749. The reversal of 87711626731 is 13762611778.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87711626731 - 2¹¹ = 87711624683 is a prime.

It is a super-2 number, since 2×87711626731² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87711626711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43855813365 + 43855813366.

It is an arithmetic number, because the mean of its divisors is an integer number (43855813366).

Almost surely, 2^87711626731 is an apocalyptic number.

87711626731 is a deficient number, since it is larger than the sum of its proper divisors (1).

87711626731 is an equidigital number, since it uses as much as digits as its factorization.

87711626731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 49.

The spelling of 87711626731 in words is "eighty-seven billion, seven hundred eleven million, six hundred twenty-six thousand, seven hundred thirty-one".