57149772498 has 96 divisors (see below), whose sum is σ = 152881537536. Its totient is φ = 15024783744.

The previous prime is 57149772481. The next prime is 57149772499. The reversal of 57149772498 is 89427794175.

57149772498 is a `hidden beast` number, since 5 + 71 + 4 + 9 + 7 + 72 + 498 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (57149772499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 464215 + ... + 574277.

It is an arithmetic number, because the mean of its divisors is an integer number (1592516016).

Almost surely, 2^57149772498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57149772498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76440768768).

57149772498 is an abundant number, since it is smaller than the sum of its proper divisors (95731765038).

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

57149772498 is a wasteful number, since it uses less digits than its factorization.

57149772498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110408 (or 110405 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The spelling of 57149772498 in words is "fifty-seven billion, one hundred forty-nine million, seven hundred seventy-two thousand, four hundred ninety-eight".