51440102413 has 4 divisors (see below), whose sum is σ = 58788688480. Its totient is φ = 44091516348.

The previous prime is 51440102407. The next prime is 51440102449. The reversal of 51440102413 is 31420104415.

51440102413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51440102413 - 2²⁹ = 50903231501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51440102113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3674293023 + ... + 3674293036.

It is an arithmetic number, because the mean of its divisors is an integer number (14697172120).

Almost surely, 2^51440102413 is an apocalyptic number.

It is an amenable number.

51440102413 is a deficient number, since it is larger than the sum of its proper divisors (7348586067).

51440102413 is an equidigital number, since it uses as much as digits as its factorization.

51440102413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7348586066.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 51440102413 its reverse (31420104415), we get a palindrome (82860206828).

The spelling of 51440102413 in words is "fifty-one billion, four hundred forty million, one hundred two thousand, four hundred thirteen".