345555608490 has 64 divisors (see below), whose sum is σ = 946386558720. Its totient is φ = 89657668800.

The previous prime is 345555608467. The next prime is 345555608507. The reversal of 345555608490 is 94806555543.

345555608490 is a `hidden beast` number, since 3 + 4 + 5 + 5 + 556 + 0 + 84 + 9 + 0 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17285086 + ... + 17305065.

It is an arithmetic number, because the mean of its divisors is an integer number (14787289980).

Almost surely, 2^345555608490 is an apocalyptic number.

345555608490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

345555608490 is an abundant number, since it is smaller than the sum of its proper divisors (600830950230).

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

345555608490 is a wasteful number, since it uses less digits than its factorization.

345555608490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34590204 (or 34590198 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 54.

The spelling of 345555608490 in words is "three hundred forty-five billion, five hundred fifty-five million, six hundred eight thousand, four hundred ninety".