45721710109 has 2 divisors, whose sum is σ = 45721710110. Its totient is φ = 45721710108.

The previous prime is 45721710077. The next prime is 45721710131. The reversal of 45721710109 is 90101712754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45695475225 + 26234884 = 213765^2 + 5122^2 .

It is a cyclic number.

It is not a de Polignac number, because 45721710109 - 2⁵ = 45721710077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45721710149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22860855054 + 22860855055.

It is an arithmetic number, because the mean of its divisors is an integer number (22860855055).

Almost surely, 2^45721710109 is an apocalyptic number.

It is an amenable number.

45721710109 is a deficient number, since it is larger than the sum of its proper divisors (1).

45721710109 is an equidigital number, since it uses as much as digits as its factorization.

45721710109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 37.

The spelling of 45721710109 in words is "forty-five billion, seven hundred twenty-one million, seven hundred ten thousand, one hundred nine".