45639340987 has 8 divisors (see below), whose sum is σ = 45699569696. Its totient is φ = 45579143232.

The previous prime is 45639340969. The next prime is 45639340993. The reversal of 45639340987 is 78904393654.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45639340987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45639340927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4644103 + ... + 4653919.

It is an arithmetic number, because the mean of its divisors is an integer number (5712446212).

Almost surely, 2^45639340987 is an apocalyptic number.

45639340987 is a deficient number, since it is larger than the sum of its proper divisors (60228709).

45639340987 is an equidigital number, since it uses as much as digits as its factorization.

45639340987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15477.

The product of its (nonzero) digits is 19595520, while the sum is 58.

The spelling of 45639340987 in words is "forty-five billion, six hundred thirty-nine million, three hundred forty thousand, nine hundred eighty-seven".