45502102721 has 2 divisors, whose sum is σ = 45502102722. Its totient is φ = 45502102720.

The previous prime is 45502102699. The next prime is 45502102729. The reversal of 45502102721 is 12720120554.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22772319025 + 22729783696 = 150905^2 + 150764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45502102721 is a prime.

It is not a weakly prime, because it can be changed into another prime (45502102729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22751051360 + 22751051361.

It is an arithmetic number, because the mean of its divisors is an integer number (22751051361).

Almost surely, 2^45502102721 is an apocalyptic number.

It is an amenable number.

45502102721 is a deficient number, since it is larger than the sum of its proper divisors (1).

45502102721 is an equidigital number, since it uses as much as digits as its factorization.

45502102721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 29.

The spelling of 45502102721 in words is "forty-five billion, five hundred two million, one hundred two thousand, seven hundred twenty-one".