51984911948915 has 16 divisors (see below), whose sum is σ = 72056091857760. Its totient is φ = 35583255237120.

The previous prime is 51984911948911. The next prime is 51984911948933.

51984911948915 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51984911948915 - 2² = 51984911948911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51984911948911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27799417220 + ... + 27799419089.

It is an arithmetic number, because the mean of its divisors is an integer number (4503505741110).

Almost surely, 2^{51984911948915} is an apocalyptic number.

51984911948915 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51984911948915 is a deficient number, since it is larger than the sum of its proper divisors (20071179908845).

51984911948915 is a wasteful number, since it uses less digits than its factorization.

51984911948915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55598836342.

The product of its digits is 167961600, while the sum is 74.

The spelling of 51984911948915 in words is "fifty-one trillion, nine hundred eighty-four billion, nine hundred eleven million, nine hundred forty-eight thousand, nine hundred fifteen".