51402031413 has 8 divisors (see below), whose sum is σ = 71515869888. Its totient is φ = 32778106944.

The previous prime is 51402031381. The next prime is 51402031423. The reversal of 51402031413 is 31413020415.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51402031413 - 2⁵ = 51402031381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51402031423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372478420 + ... + 372478557.

It is an arithmetic number, because the mean of its divisors is an integer number (8939483736).

Almost surely, 2^51402031413 is an apocalyptic number.

It is an amenable number.

51402031413 is a deficient number, since it is larger than the sum of its proper divisors (20113838475).

51402031413 is a wasteful number, since it uses less digits than its factorization.

51402031413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744957003.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 51402031413 its reverse (31413020415), we get a palindrome (82815051828).

The spelling of 51402031413 in words is "fifty-one billion, four hundred two million, thirty-one thousand, four hundred thirteen".