53508402684 has 216 divisors, whose sum is σ = 154638191344. Its totient is φ = 16166304000.

The previous prime is 53508402653. The next prime is 53508402697. The reversal of 53508402684 is 48620480535.

53508402684 is a `hidden beast` number, since 5 + 3 + 508 + 40 + 26 + 84 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 70684434 + ... + 70685190.

Almost surely, 2^53508402684 is an apocalyptic number.

53508402684 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53508402684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77319095672).

53508402684 is an abundant number, since it is smaller than the sum of its proper divisors (101129788660).

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

53508402684 is a wasteful number, since it uses less digits than its factorization.

53508402684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399 (or 1374 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The spelling of 53508402684 in words is "fifty-three billion, five hundred eight million, four hundred two thousand, six hundred eighty-four".