45639207137 has 4 divisors (see below), whose sum is σ = 45643294356. Its totient is φ = 45635119920.

The previous prime is 45639207121. The next prime is 45639207139. The reversal of 45639207137 is 73170293654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73170293654 = 2 ⋅36585146827.

It can be written as a sum of positive squares in 2 ways, for example, as 16660613776 + 28978593361 = 129076^2 + 170231^2 .

It is a cyclic number.

It is not a de Polignac number, because 45639207137 - 2⁴ = 45639207121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45639207091 and 45639207100.

It is not an unprimeable number, because it can be changed into a prime (45639207139) 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, 2026814 + ... + 2049207.

It is an arithmetic number, because the mean of its divisors is an integer number (11410823589).

Almost surely, 2^45639207137 is an apocalyptic number.

It is an amenable number.

45639207137 is a deficient number, since it is larger than the sum of its proper divisors (4087219).

45639207137 is a wasteful number, since it uses less digits than its factorization.

45639207137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087218.

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 45639207137 in words is "forty-five billion, six hundred thirty-nine million, two hundred seven thousand, one hundred thirty-seven".