51451444415415 has 32 divisors (see below), whose sum is σ = 92233350982656. Its totient is φ = 24271934463360.

The previous prime is 51451444415411. The next prime is 51451444415417.

51451444415415 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51451444415415 - 2² = 51451444415411 is a prime.

It is a super-2 number, since 2×51451444415415² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51451444415411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4213871407 + ... + 4213883616.

It is an arithmetic number, because the mean of its divisors is an integer number (2882292218208).

Almost surely, 2^{51451444415415} is an apocalyptic number.

51451444415415 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51451444415415 is a deficient number, since it is larger than the sum of its proper divisors (40781906567241).

51451444415415 is a wasteful number, since it uses less digits than its factorization.

51451444415415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8427755079.

The product of its digits is 2560000, while the sum is 48.

The spelling of 51451444415415 in words is "fifty-one trillion, four hundred fifty-one billion, four hundred forty-four million, four hundred fifteen thousand, four hundred fifteen".