51505104521043 has 6 divisors (see below), whose sum is σ = 74396262085964. Its totient is φ = 34336736347356.

The previous prime is 51505104521023. The next prime is 51505104521051. The reversal of 51505104521043 is 34012540150515.

51505104521043 is a `hidden beast` number, since 5 + 1 + 50 + 51 + 0 + 452 + 104 + 3 = 666.

It is not a de Polignac number, because 51505104521043 - 2⁹ = 51505104520531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51505104520989 and 51505104521007.

It is not an unprimeable number, because it can be changed into a prime (51505104521023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2861394695605 + ... + 2861394695622.

Almost surely, 2^{51505104521043} is an apocalyptic number.

51505104521043 is a deficient number, since it is larger than the sum of its proper divisors (22891157564921).

51505104521043 is a wasteful number, since it uses less digits than its factorization.

51505104521043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722789391233 (or 5722789391230 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 51505104521043 its reverse (34012540150515), we get a palindrome (85517644671558).

The spelling of 51505104521043 in words is "fifty-one trillion, five hundred five billion, one hundred four million, five hundred twenty-one thousand, forty-three".