51767779005 has 48 divisors (see below), whose sum is σ = 92891635200. Its totient is φ = 26642044800.

The previous prime is 51767779003. The next prime is 51767779043. The reversal of 51767779005 is 50097776715.

It is not a de Polignac number, because 51767779005 - 2¹ = 51767779003 is a prime.

It is a super-2 number, since 2×51767779005² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51767779003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 433690 + ... + 540020.

It is an arithmetic number, because the mean of its divisors is an integer number (1935242400).

Almost surely, 2^51767779005 is an apocalyptic number.

It is an amenable number.

51767779005 is a deficient number, since it is larger than the sum of its proper divisors (41123856195).

51767779005 is a wasteful number, since it uses less digits than its factorization.

51767779005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106722 (or 106719 counting only the distinct ones).

The product of its (nonzero) digits is 3241350, while the sum is 54.

The spelling of 51767779005 in words is "fifty-one billion, seven hundred sixty-seven million, seven hundred seventy-nine thousand, five".