45185657637 has 16 divisors (see below), whose sum is σ = 65148786432. Its totient is φ = 27748554240.

The previous prime is 45185657599. The next prime is 45185657659. The reversal of 45185657637 is 73675658154.

It is not a de Polignac number, because 45185657637 - 2¹⁰ = 45185656613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45185657137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9423064 + ... + 9427857.

It is an arithmetic number, because the mean of its divisors is an integer number (4071799152).

Almost surely, 2^45185657637 is an apocalyptic number.

45185657637 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

45185657637 is a deficient number, since it is larger than the sum of its proper divisors (19963128795).

45185657637 is a wasteful number, since it uses less digits than its factorization.

45185657637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18850988.

The product of its digits is 21168000, while the sum is 57.

The spelling of 45185657637 in words is "forty-five billion, one hundred eighty-five million, six hundred fifty-seven thousand, six hundred thirty-seven".