91515051050 has 24 divisors (see below), whose sum is σ = 170337746496. Its totient is φ = 36580267440.

The previous prime is 91515051011. The next prime is 91515051071. The reversal of 91515051050 is 5015051519.

It is a super-2 number, since 2×91515051050² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91515050998 and 91515051016.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 571964 + ... + 714263.

It is an arithmetic number, because the mean of its divisors is an integer number (7097406104).

Almost surely, 2^91515051050 is an apocalyptic number.

91515051050 is a deficient number, since it is larger than the sum of its proper divisors (78822695446).

91515051050 is a wasteful number, since it uses less digits than its factorization.

91515051050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287662 (or 1287657 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 32.

The spelling of 91515051050 in words is "ninety-one billion, five hundred fifteen million, fifty-one thousand, fifty".