54387836977 has 2 divisors, whose sum is σ = 54387836978. Its totient is φ = 54387836976.

The previous prime is 54387836941. The next prime is 54387836989. The reversal of 54387836977 is 77963878345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29208177216 + 25179659761 = 170904^2 + 158681^2 .

It is a cyclic number.

It is not a de Polignac number, because 54387836977 - 2¹¹ = 54387834929 is a prime.

It is a super-2 number, since 2×54387836977² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54387836777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27193918488 + 27193918489.

It is an arithmetic number, because the mean of its divisors is an integer number (27193918489).

Almost surely, 2^54387836977 is an apocalyptic number.

It is an amenable number.

54387836977 is a deficient number, since it is larger than the sum of its proper divisors (1).

54387836977 is an equidigital number, since it uses as much as digits as its factorization.

54387836977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 213373440, while the sum is 67.

The spelling of 54387836977 in words is "fifty-four billion, three hundred eighty-seven million, eight hundred thirty-six thousand, nine hundred seventy-seven".