91954455552 has 110 divisors (see below), whose sum is σ = 274594229558. Its totient is φ = 30651457536.

The previous prime is 91954455521. The next prime is 91954455563. The reversal of 91954455552 is 25555445919.

91954455552 is a `hidden beast` number, since 9 + 195 + 445 + 5 + 5 + 5 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72201839616 + 19752615936 = 268704^2 + 140544^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 471373 + ... + 637260.

Almost surely, 2^91954455552 is an apocalyptic number.

It is an amenable number.

91954455552 is an abundant number, since it is smaller than the sum of its proper divisors (182639774006).

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

91954455552 is a wasteful number, since it uses less digits than its factorization.

91954455552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108665 (or 1108638 counting only the distinct ones).

The product of its digits is 8100000, while the sum is 54.

The spelling of 91954455552 in words is "ninety-one billion, nine hundred fifty-four million, four hundred fifty-five thousand, five hundred fifty-two".