53120816515 has 8 divisors (see below), whose sum is σ = 68648439888. Its totient is φ = 39227679840.

The previous prime is 53120816501. The next prime is 53120816543. The reversal of 53120816515 is 51561802135.

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

It is not a de Polignac number, because 53120816515 - 2¹⁹ = 53120292227 is a prime.

It is a super-2 number, since 2×53120816515² (a number of 22 digits) contains 22 as substring.

It is a Duffinian 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, 408621601 + ... + 408621730.

It is an arithmetic number, because the mean of its divisors is an integer number (8581054986).

Almost surely, 2^53120816515 is an apocalyptic number.

53120816515 is a deficient number, since it is larger than the sum of its proper divisors (15527623373).

53120816515 is a wasteful number, since it uses less digits than its factorization.

53120816515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817243349.

The product of its (nonzero) digits is 36000, while the sum is 37.

The spelling of 53120816515 in words is "fifty-three billion, one hundred twenty million, eight hundred sixteen thousand, five hundred fifteen".