78873935672 has 64 divisors (see below), whose sum is σ = 171328227840. Its totient is φ = 33343689600.

The previous prime is 78873935633. The next prime is 78873935711. The reversal of 78873935672 is 27653937887.

It is an interprime number because it is at equal distance from previous prime (78873935633) and next prime (78873935711).

It is a junction number, because it is equal to n+sod(n) for n = 78873935599 and 78873935608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1192922 + ... + 1257302.

It is an arithmetic number, because the mean of its divisors is an integer number (2677003560).

Almost surely, 2^78873935672 is an apocalyptic number.

It is an amenable number.

78873935672 is an abundant number, since it is smaller than the sum of its proper divisors (92454292168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78873935672 is a wasteful number, since it uses less digits than its factorization.

78873935672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64692 (or 64688 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 65.

The spelling of 78873935672 in words is "seventy-eight billion, eight hundred seventy-three million, nine hundred thirty-five thousand, six hundred seventy-two".