385313977906 has 16 divisors (see below), whose sum is σ = 679014842688. Its totient is φ = 161670200400.

The previous prime is 385313977901. The next prime is 385313977999. The reversal of 385313977906 is 609779313583.

It is a super-2 number, since 2×385313977906² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (385313977901) 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, 673625550 + ... + 673626121.

It is an arithmetic number, because the mean of its divisors is an integer number (42438427668).

Almost surely, 2^385313977906 is an apocalyptic number.

385313977906 is a deficient number, since it is larger than the sum of its proper divisors (293700864782).

385313977906 is a wasteful number, since it uses less digits than its factorization.

385313977906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347251697.

The product of its (nonzero) digits is 25719120, while the sum is 61.

The spelling of 385313977906 in words is "three hundred eighty-five billion, three hundred thirteen million, nine hundred seventy-seven thousand, nine hundred six".