55136575494 has 384 divisors, whose sum is σ = 170016537600. Its totient is φ = 12510650880.

The previous prime is 55136575471. The next prime is 55136575523. The reversal of 55136575494 is 49457563155.

55136575494 is a `hidden beast` number, since 5 + 51 + 36 + 5 + 75 + 494 = 666.

It is a super-2 number, since 2×55136575494² (a number of 22 digits) contains 22 as substring.

Its product of digits (11340000) is a multiple of the sum of its prime divisors (1008).

It is a self number, because there is not a number n which added to its sum of digits gives 55136575494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 57855322 + ... + 57856274.

It is an arithmetic number, because the mean of its divisors is an integer number (442751400).

Almost surely, 2^55136575494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55136575494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85008268800).

55136575494 is an abundant number, since it is smaller than the sum of its proper divisors (114879962106).

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

55136575494 is a wasteful number, since it uses less digits than its factorization.

55136575494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1008 counting only the distinct ones).

The product of its digits is 11340000, while the sum is 54.

The spelling of 55136575494 in words is "fifty-five billion, one hundred thirty-six million, five hundred seventy-five thousand, four hundred ninety-four".