53111697408 has 936 divisors, whose sum is σ = 203674784880. Its totient is φ = 13795246080.

The previous prime is 53111697407. The next prime is 53111697409. The reversal of 53111697408 is 80479611135.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

53111697408 is a `hidden beast` number, since 531 + 11 + 69 + 7 + 40 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (53111697407) and next prime (53111697409).

It is not an unprimeable number, because it can be changed into a prime (53111697403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4828336123 + ... + 4828336133.

Almost surely, 2^53111697408 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 53111697408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101837392440).

53111697408 is an abundant number, since it is smaller than the sum of its proper divisors (150563087472).

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

53111697408 is an frugal number, since it uses more digits than its factorization.

53111697408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 23 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 53111697408 in words is "fifty-three billion, one hundred eleven million, six hundred ninety-seven thousand, four hundred eight".