78628749276 has 48 divisors (see below), whose sum is σ = 228738182400. Its totient is φ = 20423051520.

The previous prime is 78628749259. The next prime is 78628749281. The reversal of 78628749276 is 67294782687.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42547101 + ... + 42548948.

It is an arithmetic number, because the mean of its divisors is an integer number (4765378800).

Almost surely, 2^78628749276 is an apocalyptic number.

It is an amenable number.

78628749276 is an abundant number, since it is smaller than the sum of its proper divisors (150109433124).

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

78628749276 is a wasteful number, since it uses less digits than its factorization.

78628749276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85096074 (or 85096072 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 66.

The spelling of 78628749276 in words is "seventy-eight billion, six hundred twenty-eight million, seven hundred forty-nine thousand, two hundred seventy-six".