53146737504 has 216 divisors, whose sum is σ = 176791135248. Its totient is φ = 15100162560.

The previous prime is 53146737487. The next prime is 53146737571. The reversal of 53146737504 is 40573764135.

53146737504 is a `hidden beast` number, since 5 + 31 + 46 + 73 + 7 + 504 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 53146737504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2543869 + ... + 2564675.

It is an arithmetic number, because the mean of its divisors is an integer number (818477478).

Almost surely, 2^53146737504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53146737504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88395567624).

53146737504 is an abundant number, since it is smaller than the sum of its proper divisors (123644397744).

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

53146737504 is a wasteful number, since it uses less digits than its factorization.

53146737504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21018 (or 21000 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 45.

The spelling of 53146737504 in words is "fifty-three billion, one hundred forty-six million, seven hundred thirty-seven thousand, five hundred four".