51404023267 has 4 divisors (see below), whose sum is σ = 51419194560. Its totient is φ = 51388851976.

The previous prime is 51404023249. The next prime is 51404023273. The reversal of 51404023267 is 76232040415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76232040415 = 5 ⋅15246408083.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51404023267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51404023247) 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, 7580563 + ... + 7587340.

It is an arithmetic number, because the mean of its divisors is an integer number (12854798640).

Almost surely, 2^51404023267 is an apocalyptic number.

51404023267 is a deficient number, since it is larger than the sum of its proper divisors (15171293).

51404023267 is a wasteful number, since it uses less digits than its factorization.

51404023267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15171292.

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 51404023267 in words is "fifty-one billion, four hundred four million, twenty-three thousand, two hundred sixty-seven".