45125687999 has 4 divisors (see below), whose sum is σ = 51572214864. Its totient is φ = 38679161136.

The previous prime is 45125687983. The next prime is 45125688001. The reversal of 45125687999 is 99978652154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99978652154 = 2 ⋅49989326077.

It is not a de Polignac number, because 45125687999 - 2⁴ = 45125687983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45125687909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3223263422 + ... + 3223263435.

It is an arithmetic number, because the mean of its divisors is an integer number (12893053716).

Almost surely, 2^45125687999 is an apocalyptic number.

45125687999 is a deficient number, since it is larger than the sum of its proper divisors (6446526865).

45125687999 is an equidigital number, since it uses as much as digits as its factorization.

45125687999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6446526864.

The product of its digits is 48988800, while the sum is 65.

The spelling of 45125687999 in words is "forty-five billion, one hundred twenty-five million, six hundred eighty-seven thousand, nine hundred ninety-nine".