91242454455 has 40 divisors (see below), whose sum is σ = 172169012400. Its totient is φ = 46101446784.

The previous prime is 91242454453. The next prime is 91242454481. The reversal of 91242454455 is 55445424219.

91242454455 is a `hidden beast` number, since 9 + 12 + 42 + 4 + 544 + 55 = 666.

It is not a de Polignac number, because 91242454455 - 2¹ = 91242454453 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 91242454455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91242454453) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5920990 + ... + 5936379.

It is an arithmetic number, because the mean of its divisors is an integer number (4304225310).

Almost surely, 2^91242454455 is an apocalyptic number.

91242454455 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

91242454455 is a deficient number, since it is larger than the sum of its proper divisors (80926557945).

91242454455 is a wasteful number, since it uses less digits than its factorization.

91242454455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11857405 (or 11857396 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 45.

The spelling of 91242454455 in words is "ninety-one billion, two hundred forty-two million, four hundred fifty-four thousand, four hundred fifty-five".