51465611062401 has 4 divisors (see below), whose sum is σ = 68620814749872. Its totient is φ = 34310407374932.

The previous prime is 51465611062387. The next prime is 51465611062499. The reversal of 51465611062401 is 10426011656415.

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 51465611062401 - 2¹⁹ = 51465610538113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51465611062301) 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, 8577601843731 + ... + 8577601843736.

It is an arithmetic number, because the mean of its divisors is an integer number (17155203687468).

Almost surely, 2^{51465611062401} is an apocalyptic number.

It is an amenable number.

51465611062401 is a deficient number, since it is larger than the sum of its proper divisors (17155203687471).

51465611062401 is a wasteful number, since it uses less digits than its factorization.

51465611062401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17155203687470.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 51465611062401 in words is "fifty-one trillion, four hundred sixty-five billion, six hundred eleven million, sixty-two thousand, four hundred one".