78735777760 has 24 divisors (see below), whose sum is σ = 186013275336. Its totient is φ = 31494311040.

The previous prime is 78735777749. The next prime is 78735777787. The reversal of 78735777760 is 6777753787.

It is a super-2 number, since 2×78735777760² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78735777692 and 78735777701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246049146 + ... + 246049465.

It is an arithmetic number, because the mean of its divisors is an integer number (7750553139).

Almost surely, 2^78735777760 is an apocalyptic number.

It is an amenable number.

78735777760 is an abundant number, since it is smaller than the sum of its proper divisors (107277497576).

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

78735777760 is a wasteful number, since it uses less digits than its factorization.

78735777760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492098626 (or 492098618 counting only the distinct ones).

The product of its (nonzero) digits is 84707280, while the sum is 64.

The spelling of 78735777760 in words is "seventy-eight billion, seven hundred thirty-five million, seven hundred seventy-seven thousand, seven hundred sixty".