78380874893552 has 160 divisors (see below), whose sum is σ = 191479529525760. Its totient is φ = 30192270704640.

The previous prime is 78380874893533. The next prime is 78380874893567. The reversal of 78380874893552 is 25539847808387.

It is a super-2 number, since 2×78380874893552² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (77).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1691516528 + ... + 1691562864.

It is an arithmetic number, because the mean of its divisors is an integer number (1196747059536).

Almost surely, 2^{78380874893552} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78380874893552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95739764762880).

78380874893552 is an abundant number, since it is smaller than the sum of its proper divisors (113098654632208).

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

78380874893552 is a wasteful number, since it uses less digits than its factorization.

78380874893552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61879 (or 61873 counting only the distinct ones).

The product of its (nonzero) digits is 3251404800, while the sum is 77.

The spelling of 78380874893552 in words is "seventy-eight trillion, three hundred eighty billion, eight hundred seventy-four million, eight hundred ninety-three thousand, five hundred fifty-two".