91501940763 has 8 divisors (see below), whose sum is σ = 135558430800. Its totient is φ = 61001293824.

The previous prime is 91501940731. The next prime is 91501940839. The reversal of 91501940763 is 36704910519.

It is not a de Polignac number, because 91501940763 - 2⁵ = 91501940731 is a prime.

It is a super-2 number, since 2×91501940763² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91501930763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1694480358 + ... + 1694480411.

It is an arithmetic number, because the mean of its divisors is an integer number (16944803850).

Almost surely, 2^91501940763 is an apocalyptic number.

91501940763 is a deficient number, since it is larger than the sum of its proper divisors (44056490037).

91501940763 is a wasteful number, since it uses less digits than its factorization.

91501940763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388960778 (or 3388960772 counting only the distinct ones).

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

The spelling of 91501940763 in words is "ninety-one billion, five hundred one million, nine hundred forty thousand, seven hundred sixty-three".