51919672909 has 16 divisors (see below), whose sum is σ = 58371191424. Its totient is φ = 45821160000.

The previous prime is 51919672901. The next prime is 51919672933. The reversal of 51919672909 is 90927691915.

It is a happy number.

51919672909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51919672909 - 2³ = 51919672901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51919672901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634479 + ... + 711619.

It is an arithmetic number, because the mean of its divisors is an integer number (3648199464).

Almost surely, 2^51919672909 is an apocalyptic number.

It is an amenable number.

51919672909 is a deficient number, since it is larger than the sum of its proper divisors (6451518515).

51919672909 is a wasteful number, since it uses less digits than its factorization.

51919672909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79428.

The product of its (nonzero) digits is 2755620, while the sum is 58.

The spelling of 51919672909 in words is "fifty-one billion, nine hundred nineteen million, six hundred seventy-two thousand, nine hundred nine".