91763159040 has 832 divisors, whose sum is σ = 377692907520. Its totient is φ = 20702822400.

The previous prime is 91763159017. The next prime is 91763159051. The reversal of 91763159040 is 4095136719.

91763159040 is a `hidden beast` number, since 9 + 1 + 7 + 631 + 5 + 9 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 584478642 + ... + 584478798.

Almost surely, 2^91763159040 is an apocalyptic number.

91763159040 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91763159040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188846453760).

91763159040 is an abundant number, since it is smaller than the sum of its proper divisors (285929748480).

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

91763159040 is a wasteful number, since it uses less digits than its factorization.

91763159040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 325 counting only the distinct ones).

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

The spelling of 91763159040 in words is "ninety-one billion, seven hundred sixty-three million, one hundred fifty-nine thousand, forty".