53465215904 has 96 divisors (see below), whose sum is σ = 109916061696. Its totient is φ = 25571669760.

The previous prime is 53465215901. The next prime is 53465215913. The reversal of 53465215904 is 40951256435.

It is a super-2 number, since 2×53465215904² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53465215901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43715837 + ... + 43717059.

It is an arithmetic number, because the mean of its divisors is an integer number (1144958976).

Almost surely, 2^53465215904 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 53465215904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54958030848).

53465215904 is an abundant number, since it is smaller than the sum of its proper divisors (56450845792).

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

53465215904 is a wasteful number, since it uses less digits than its factorization.

53465215904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738 (or 1730 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 53465215904 in words is "fifty-three billion, four hundred sixty-five million, two hundred fifteen thousand, nine hundred four".