78314513772 has 48 divisors (see below), whose sum is σ = 204208147584. Its totient is φ = 23152848000.

The previous prime is 78314513759. The next prime is 78314513777. The reversal of 78314513772 is 27731541387.

It is a super-2 number, since 2×78314513772² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78314513777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7229854 + ... + 7240677.

It is an arithmetic number, because the mean of its divisors is an integer number (4254336408).

Almost surely, 2^78314513772 is an apocalyptic number.

It is an amenable number.

78314513772 is an abundant number, since it is smaller than the sum of its proper divisors (125893633812).

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

78314513772 is a wasteful number, since it uses less digits than its factorization.

78314513772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14470590 (or 14470588 counting only the distinct ones).

The product of its digits is 987840, while the sum is 48.

The spelling of 78314513772 in words is "seventy-eight billion, three hundred fourteen million, five hundred thirteen thousand, seven hundred seventy-two".