89471587631 has 2 divisors, whose sum is σ = 89471587632. Its totient is φ = 89471587630.

The previous prime is 89471587627. The next prime is 89471587637. The reversal of 89471587631 is 13678517498.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89471587631 - 2² = 89471587627 is a prime.

It is a super-2 number, since 2×89471587631² (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 (89471587637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44735793815 + 44735793816.

It is an arithmetic number, because the mean of its divisors is an integer number (44735793816).

Almost surely, 2^89471587631 is an apocalyptic number.

89471587631 is a deficient number, since it is larger than the sum of its proper divisors (1).

89471587631 is an equidigital number, since it uses as much as digits as its factorization.

89471587631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10160640, while the sum is 59.

The spelling of 89471587631 in words is "eighty-nine billion, four hundred seventy-one million, five hundred eighty-seven thousand, six hundred thirty-one".