78328290956 has 6 divisors (see below), whose sum is σ = 137074509180. Its totient is φ = 39164145476.

The previous prime is 78328290917. The next prime is 78328290983. The reversal of 78328290956 is 65909282387.

It is a super-2 number, since 2×78328290956² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78328290895 and 78328290904.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9791036366 + ... + 9791036373.

It is an arithmetic number, because the mean of its divisors is an integer number (22845751530).

Almost surely, 2^78328290956 is an apocalyptic number.

It is an amenable number.

78328290956 is a deficient number, since it is larger than the sum of its proper divisors (58746218224).

78328290956 is a wasteful number, since it uses less digits than its factorization.

78328290956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19582072743 (or 19582072741 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 78328290956 in words is "seventy-eight billion, three hundred twenty-eight million, two hundred ninety thousand, nine hundred fifty-six".