385377877503 has 24 divisors (see below), whose sum is σ = 578940224720. Its totient is φ = 246829887360.

The previous prime is 385377877457. The next prime is 385377877513. The reversal of 385377877503 is 305778773583.

385377877503 is a `hidden beast` number, since 3 + 8 + 53 + 7 + 7 + 8 + 77 + 503 = 666.

It is not a de Polignac number, because 385377877503 - 2⁹ = 385377876991 is a prime.

It is a super-2 number, since 2×385377877503² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385377877513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8138758 + ... + 8185971.

Almost surely, 2^385377877503 is an apocalyptic number.

385377877503 is a deficient number, since it is larger than the sum of its proper divisors (193562347217).

385377877503 is a wasteful number, since it uses less digits than its factorization.

385377877503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16324839 (or 16324836 counting only the distinct ones).

The product of its (nonzero) digits is 103723200, while the sum is 63.

The spelling of 385377877503 in words is "three hundred eighty-five billion, three hundred seventy-seven million, eight hundred seventy-seven thousand, five hundred three".