53436976506 has 16 divisors (see below), whose sum is σ = 118748836800. Its totient is φ = 17812325484.

The previous prime is 53436976499. The next prime is 53436976511. The reversal of 53436976506 is 60567963435.

53436976506 is a `hidden beast` number, since 5 + 3 + 4 + 3 + 69 + 76 + 506 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 989573639 = 53436976506 / (5 + 3 + 4 + 3 + 6 + 9 + 7 + 6 + 5 + 0 + 6).

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 494786766 + ... + 494786873.

It is an arithmetic number, because the mean of its divisors is an integer number (7421802300).

Almost surely, 2^53436976506 is an apocalyptic number.

53436976506 is an abundant number, since it is smaller than the sum of its proper divisors (65311860294).

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

53436976506 is a wasteful number, since it uses less digits than its factorization.

53436976506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989573650 (or 989573644 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 54.

The spelling of 53436976506 in words is "fifty-three billion, four hundred thirty-six million, nine hundred seventy-six thousand, five hundred six".