78265694088 has 192 divisors, whose sum is σ = 219527642880. Its totient is φ = 25174195200.

The previous prime is 78265694057. The next prime is 78265694113. The reversal of 78265694088 is 88049656287.

78265694088 is a `hidden beast` number, since 7 + 8 + 26 + 569 + 40 + 8 + 8 = 666.

It is a super-2 number, since 2×78265694088² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 169040145 + ... + 169040607.

It is an arithmetic number, because the mean of its divisors is an integer number (1143373140).

Almost surely, 2^78265694088 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 78265694088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109763821440).

78265694088 is an abundant number, since it is smaller than the sum of its proper divisors (141261948792).

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

78265694088 is a wasteful number, since it uses less digits than its factorization.

78265694088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 78265694088 in words is "seventy-eight billion, two hundred sixty-five million, six hundred ninety-four thousand, eighty-eight".