350640633420 has 288 divisors, whose sum is σ = 1395852756480. Its totient is φ = 69025582080.

The previous prime is 350640633389. The next prime is 350640633443. The reversal of 350640633420 is 24336046053.

350640633420 is a `hidden beast` number, since 3 + 5 + 0 + 640 + 6 + 3 + 3 + 4 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 402417 + ... + 929096.

It is an arithmetic number, because the mean of its divisors is an integer number (4846710960).

Almost surely, 2^350640633420 is an apocalyptic number.

350640633420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

350640633420 is an abundant number, since it is smaller than the sum of its proper divisors (1045212123060).

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

350640633420 is a wasteful number, since it uses less digits than its factorization.

350640633420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331565 (or 1331560 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 36.

Adding to 350640633420 its reverse (24336046053), we get a palindrome (374976679473).

The spelling of 350640633420 in words is "three hundred fifty billion, six hundred forty million, six hundred thirty-three thousand, four hundred twenty".