53306981406 has 192 divisors, whose sum is σ = 139556431872. Its totient is φ = 14390078976.

The previous prime is 53306981369. The next prime is 53306981437. The reversal of 53306981406 is 60418960335.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20960971 + ... + 20963513.

It is an arithmetic number, because the mean of its divisors is an integer number (726856416).

Almost surely, 2^53306981406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53306981406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69778215936).

53306981406 is an abundant number, since it is smaller than the sum of its proper divisors (86249450466).

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

53306981406 is a wasteful number, since it uses less digits than its factorization.

53306981406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727 (or 2724 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 53306981406 in words is "fifty-three billion, three hundred six million, nine hundred eighty-one thousand, four hundred six".