51267633566 has 16 divisors (see below), whose sum is σ = 80092268640. Its totient is φ = 24589726560.

The previous prime is 51267633563. The next prime is 51267633569. The reversal of 51267633566 is 66533676215.

It is an interprime number because it is at equal distance from previous prime (51267633563) and next prime (51267633569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51267633563) 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, 4873661 + ... + 4884168.

It is an arithmetic number, because the mean of its divisors is an integer number (5005766790).

Almost surely, 2^51267633566 is an apocalyptic number.

51267633566 is a deficient number, since it is larger than the sum of its proper divisors (28824635074).

51267633566 is a wasteful number, since it uses less digits than its factorization.

51267633566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9757939.

The product of its digits is 4082400, while the sum is 50.

The spelling of 51267633566 in words is "fifty-one billion, two hundred sixty-seven million, six hundred thirty-three thousand, five hundred sixty-six".