51163061015 has 64 divisors (see below), whose sum is σ = 71424460800. Its totient is φ = 35082875520.

The previous prime is 51163061011. The next prime is 51163061023. The reversal of 51163061015 is 51016036115.

It is not a de Polignac number, because 51163061015 - 2² = 51163061011 is a prime.

It is a super-2 number, since 2×51163061015² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51163061011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30219509 + ... + 30221201.

It is an arithmetic number, because the mean of its divisors is an integer number (1116007200).

Almost surely, 2^51163061015 is an apocalyptic number.

51163061015 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51163061015 is a deficient number, since it is larger than the sum of its proper divisors (20261399785).

51163061015 is a wasteful number, since it uses less digits than its factorization.

51163061015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989 (or 1967 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 29.

The spelling of 51163061015 in words is "fifty-one billion, one hundred sixty-three million, sixty-one thousand, fifteen".