78461632476 has 96 divisors (see below), whose sum is σ = 214314732800. Its totient is φ = 24755440320.

The previous prime is 78461632451. The next prime is 78461632477. The reversal of 78461632476 is 67423616487.

78461632476 is a `hidden beast` number, since 7 + 8 + 4 + 6 + 163 + 2 + 476 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78461632477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2386566 + ... + 2419218.

Almost surely, 2^78461632476 is an apocalyptic number.

78461632476 is a gapful number since it is divisible by the number (76) 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 78461632476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107157366400).

78461632476 is an abundant number, since it is smaller than the sum of its proper divisors (135853100324).

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

78461632476 is a wasteful number, since it uses less digits than its factorization.

78461632476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33856 (or 33848 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The spelling of 78461632476 in words is "seventy-eight billion, four hundred sixty-one million, six hundred thirty-two thousand, four hundred seventy-six".