78927161040 has 480 divisors, whose sum is σ = 329489911296. Its totient is φ = 16486502400.

The previous prime is 78927161023. The next prime is 78927161059. The reversal of 78927161040 is 4016172987.

It is a happy number.

78927161040 is a `hidden beast` number, since 7 + 8 + 9 + 27 + 1 + 610 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6611557 + ... + 6623483.

Almost surely, 2^78927161040 is an apocalyptic number.

78927161040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78927161040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164744955648).

78927161040 is an abundant number, since it is smaller than the sum of its proper divisors (250562750256).

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

78927161040 is a wasteful number, since it uses less digits than its factorization.

78927161040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12067 (or 12058 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 78927161040 in words is "seventy-eight billion, nine hundred twenty-seven million, one hundred sixty-one thousand, forty".