45387076621 has 2 divisors, whose sum is σ = 45387076622. Its totient is φ = 45387076620.

The previous prime is 45387076619. The next prime is 45387076687. The reversal of 45387076621 is 12667078354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28698054025 + 16689022596 = 169405^2 + 129186^2 .

It is a cyclic number.

It is not a de Polignac number, because 45387076621 - 2¹ = 45387076619 is a prime.

Together with 45387076619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45387086621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22693538310 + 22693538311.

It is an arithmetic number, because the mean of its divisors is an integer number (22693538311).

Almost surely, 2^45387076621 is an apocalyptic number.

It is an amenable number.

45387076621 is a deficient number, since it is larger than the sum of its proper divisors (1).

45387076621 is an equidigital number, since it uses as much as digits as its factorization.

45387076621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 45387076621 in words is "forty-five billion, three hundred eighty-seven million, seventy-six thousand, six hundred twenty-one".