53400557815 has 8 divisors (see below), whose sum is σ = 69906184848. Its totient is φ = 38836769280.

The previous prime is 53400557783. The next prime is 53400557831. The reversal of 53400557815 is 51875500435.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53400557815 - 2⁵ = 53400557783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485459562 + ... + 485459671.

It is an arithmetic number, because the mean of its divisors is an integer number (8738273106).

Almost surely, 2^53400557815 is an apocalyptic number.

53400557815 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53400557815 is a deficient number, since it is larger than the sum of its proper divisors (16505627033).

53400557815 is a wasteful number, since it uses less digits than its factorization.

53400557815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970919249.

The product of its (nonzero) digits is 420000, while the sum is 43.

The spelling of 53400557815 in words is "fifty-three billion, four hundred million, five hundred fifty-seven thousand, eight hundred fifteen".