115477100621 has 2 divisors, whose sum is σ = 115477100622. Its totient is φ = 115477100620.

The previous prime is 115477100551. The next prime is 115477100699. The reversal of 115477100621 is 126001774511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113290135396 + 2186965225 = 336586^2 + 46765^2 .

It is an emirp because it is prime and its reverse (126001774511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115477100621 - 2¹⁰ = 115477099597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115477900621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57738550310 + 57738550311.

It is an arithmetic number, because the mean of its divisors is an integer number (57738550311).

Almost surely, 2^115477100621 is an apocalyptic number.

It is an amenable number.

115477100621 is a deficient number, since it is larger than the sum of its proper divisors (1).

115477100621 is an equidigital number, since it uses as much as digits as its factorization.

115477100621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 35.

The spelling of 115477100621 in words is "one hundred fifteen billion, four hundred seventy-seven million, one hundred thousand, six hundred twenty-one".