45315636639 has 24 divisors (see below), whose sum is σ = 75692055600. Its totient is φ = 23902752384.

The previous prime is 45315636637. The next prime is 45315636643. The reversal of 45315636639 is 93663651354.

It is not a de Polignac number, because 45315636639 - 2¹ = 45315636637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45315636591 and 45315636600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45315636637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11854614 + ... + 11858435.

It is an arithmetic number, because the mean of its divisors is an integer number (3153835650).

Almost surely, 2^45315636639 is an apocalyptic number.

45315636639 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

45315636639 is a deficient number, since it is larger than the sum of its proper divisors (30376418961).

45315636639 is a wasteful number, since it uses less digits than its factorization.

45315636639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23713079 (or 23713072 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 51.

The spelling of 45315636639 in words is "forty-five billion, three hundred fifteen million, six hundred thirty-six thousand, six hundred thirty-nine".