51404815023826 has 16 divisors (see below), whose sum is σ = 84121092740160. Its totient is φ = 23364679816080.

The previous prime is 51404815023823. The next prime is 51404815023841. The reversal of 51404815023826 is 62832051840415.

It is a self number, because there is not a number n which added to its sum of digits gives 51404815023826.

It is not an unprimeable number, because it can be changed into a prime (51404815023823) 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, 56800581 + ... + 57698488.

It is an arithmetic number, because the mean of its divisors is an integer number (5257568296260).

Almost surely, 2^{51404815023826} is an apocalyptic number.

51404815023826 is a deficient number, since it is larger than the sum of its proper divisors (32716277716334).

51404815023826 is a wasteful number, since it uses less digits than its factorization.

51404815023826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114519489.

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 51404815023826 in words is "fifty-one trillion, four hundred four billion, eight hundred fifteen million, twenty-three thousand, eight hundred twenty-six".