76451287878 has 144 divisors (see below), whose sum is σ = 195472551456. Its totient is φ = 21141699840.

The previous prime is 76451287873. The next prime is 76451287883. The reversal of 76451287878 is 87878215467.

It is an interprime number because it is at equal distance from previous prime (76451287873) and next prime (76451287883).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76451287873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 137255176 + ... + 137255732.

It is an arithmetic number, because the mean of its divisors is an integer number (1357448274).

Almost surely, 2^76451287878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76451287878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97736275728).

76451287878 is an abundant number, since it is smaller than the sum of its proper divisors (119021263578).

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

76451287878 is a wasteful number, since it uses less digits than its factorization.

76451287878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 773 counting only the distinct ones).

The product of its digits is 42147840, while the sum is 63.

The spelling of 76451287878 in words is "seventy-six billion, four hundred fifty-one million, two hundred eighty-seven thousand, eight hundred seventy-eight".