51568288286515 has 48 divisors (see below), whose sum is σ = 83715690469824. Its totient is φ = 29673660360960.

The previous prime is 51568288286497. The next prime is 51568288286539.

51568288286515 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51568288286515 - 2⁴¹ = 49369265030963 is a prime.

It is a super-2 number, since 2×51568288286515² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 468279232 + ... + 468389341.

It is an arithmetic number, because the mean of its divisors is an integer number (1744076884788).

Almost surely, 2^{51568288286515} is an apocalyptic number.

51568288286515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51568288286515 is a deficient number, since it is larger than the sum of its proper divisors (32147402183309).

51568288286515 is a wasteful number, since it uses less digits than its factorization.

51568288286515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936668620 (or 936668609 counting only the distinct ones).

The product of its digits is 368640000, while the sum is 70.

The spelling of 51568288286515 in words is "fifty-one trillion, five hundred sixty-eight billion, two hundred eighty-eight million, two hundred eighty-six thousand, five hundred fifteen".