51392435249 has 4 divisors (see below), whose sum is σ = 51404143680. Its totient is φ = 51380726820.

The previous prime is 51392435219. The next prime is 51392435267. The reversal of 51392435249 is 94253429315.

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 51392435249 - 2¹⁶ = 51392369713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51392435219) 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, 5847629 + ... + 5856410.

It is an arithmetic number, because the mean of its divisors is an integer number (12851035920).

Almost surely, 2^51392435249 is an apocalyptic number.

It is an amenable number.

51392435249 is a deficient number, since it is larger than the sum of its proper divisors (11708431).

51392435249 is a wasteful number, since it uses less digits than its factorization.

51392435249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11708430.

The product of its digits is 1166400, while the sum is 47.

The spelling of 51392435249 in words is "fifty-one billion, three hundred ninety-two million, four hundred thirty-five thousand, two hundred forty-nine".