51023388787 has 32 divisors (see below), whose sum is σ = 62225832960. Its totient is φ = 40840243200.

The previous prime is 51023388781. The next prime is 51023388803. The reversal of 51023388787 is 78788332015.

It is a happy number.

51023388787 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 a de Polignac number, because none of the positive numbers 2^k-51023388787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51023388781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26754888 + ... + 26756794.

It is an arithmetic number, because the mean of its divisors is an integer number (1944557280).

Almost surely, 2^51023388787 is an apocalyptic number.

51023388787 is a deficient number, since it is larger than the sum of its proper divisors (11202444173).

51023388787 is a wasteful number, since it uses less digits than its factorization.

51023388787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 51023388787 in words is "fifty-one billion, twenty-three million, three hundred eighty-eight thousand, seven hundred eighty-seven".