91259317062 has 64 divisors (see below), whose sum is σ = 213036480000. Its totient is φ = 28901831904.

The previous prime is 91259317043. The next prime is 91259317081. The reversal of 91259317062 is 26071395219.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91259317043) and next prime (91259317081).

It is a junction number, because it is equal to n+sod(n) for n = 91259316999 and 91259317017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61512 + ... + 431627.

It is an arithmetic number, because the mean of its divisors is an integer number (3328695000).

Almost surely, 2^91259317062 is an apocalyptic number.

91259317062 is an abundant number, since it is smaller than the sum of its proper divisors (121777162938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91259317062 is a wasteful number, since it uses less digits than its factorization.

91259317062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493322 (or 493316 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

It can be divided in two parts, 91259 and 317062, that added together give a square (408321 = 639²).

The spelling of 91259317062 in words is "ninety-one billion, two hundred fifty-nine million, three hundred seventeen thousand, sixty-two".