79887443648 has 14 divisors (see below), whose sum is σ = 158526646116. Its totient is φ = 39943721792.

The previous prime is 79887443633. The next prime is 79887443651. The reversal of 79887443648 is 84634478897.

It is a happy number.

It is a super-2 number, since 2×79887443648² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624120590 + ... + 624120717.

Almost surely, 2^79887443648 is an apocalyptic number.

It is an amenable number.

79887443648 is a deficient number, since it is larger than the sum of its proper divisors (78639202468).

79887443648 is a wasteful number, since it uses less digits than its factorization.

79887443648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248241319 (or 1248241309 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 68.

The spelling of 79887443648 in words is "seventy-nine billion, eight hundred eighty-seven million, four hundred forty-three thousand, six hundred forty-eight".