385979444778 has 16 divisors (see below), whose sum is σ = 771965054496. Its totient is φ = 128658787440.

The previous prime is 385979444771. The next prime is 385979444797. The reversal of 385979444778 is 877444979583.

It is a super-2 number, since 2×385979444778² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (385979444771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1148500 + ... + 1446032.

It is an arithmetic number, because the mean of its divisors is an integer number (48247815906).

Almost surely, 2^385979444778 is an apocalyptic number.

385979444778 is an abundant number, since it is smaller than the sum of its proper divisors (385985609718).

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

385979444778 is a wasteful number, since it uses less digits than its factorization.

385979444778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513749.

The product of its digits is 1706987520, while the sum is 75.

The spelling of 385979444778 in words is "three hundred eighty-five billion, nine hundred seventy-nine million, four hundred forty-four thousand, seven hundred seventy-eight".