385506633240 has 96 divisors (see below), whose sum is σ = 1253697943680. Its totient is φ = 102736014336.

The previous prime is 385506633203. The next prime is 385506633269. The reversal of 385506633240 is 42336605583.

385506633240 is a `hidden beast` number, since 3 + 8 + 5 + 5 + 0 + 6 + 633 + 2 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222432 + ... + 905808.

It is an arithmetic number, because the mean of its divisors is an integer number (13059353580).

Almost surely, 2^385506633240 is an apocalyptic number.

385506633240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385506633240 is an abundant number, since it is smaller than the sum of its proper divisors (868191310440).

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

385506633240 is a wasteful number, since it uses less digits than its factorization.

385506633240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684961 (or 684954 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 385506633240 in words is "three hundred eighty-five billion, five hundred six million, six hundred thirty-three thousand, two hundred forty".