511977779115 has 24 divisors (see below), whose sum is σ = 900403899024. Its totient is φ = 248231649600.

The previous prime is 511977779113. The next prime is 511977779177.

511977779115 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 511977779115 - 2¹ = 511977779113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (511977779113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141038896 + ... + 141042525.

It is an arithmetic number, because the mean of its divisors is an integer number (37516829126).

Almost surely, 2^511977779115 is an apocalyptic number.

511977779115 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

511977779115 is a deficient number, since it is larger than the sum of its proper divisors (388426119909).

511977779115 is a wasteful number, since it uses less digits than its factorization.

511977779115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282081451 (or 282081440 counting only the distinct ones).

The product of its digits is 4862025, while the sum is 60.

The spelling of 511977779115 in words is "five hundred eleven billion, nine hundred seventy-seven million, seven hundred seventy-nine thousand, one hundred fifteen".