385535291864 has 32 divisors (see below), whose sum is σ = 735847416000. Its totient is φ = 189331414272.

The previous prime is 385535291851. The next prime is 385535291873. The reversal of 385535291864 is 468192535583.

It is a super-2 number, since 2×385535291864² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1241519 + ... + 1520670.

It is an arithmetic number, because the mean of its divisors is an integer number (22995231750).

Almost surely, 2^385535291864 is an apocalyptic number.

It is an amenable number.

385535291864 is a deficient number, since it is larger than the sum of its proper divisors (350312124136).

385535291864 is a wasteful number, since it uses less digits than its factorization.

385535291864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762507 (or 2762503 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 59.

The spelling of 385535291864 in words is "three hundred eighty-five billion, five hundred thirty-five million, two hundred ninety-one thousand, eight hundred sixty-four".