78383796390 has 80 divisors (see below), whose sum is σ = 210847266432. Its totient is φ = 20894219136.

The previous prime is 78383796389. The next prime is 78383796397. The reversal of 78383796390 is 9369738387.

78383796390 is a `hidden beast` number, since 7 + 83 + 83 + 7 + 96 + 390 = 666.

It is a super-2 number, since 2×78383796390² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78383796397) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2231947 + ... + 2266793.

Almost surely, 2^78383796390 is an apocalyptic number.

78383796390 is an abundant number, since it is smaller than the sum of its proper divisors (132463470042).

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

78383796390 is a wasteful number, since it uses less digits than its factorization.

78383796390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37643 (or 37634 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 63.

The spelling of 78383796390 in words is "seventy-eight billion, three hundred eighty-three million, seven hundred ninety-six thousand, three hundred ninety".