345611884572 has 72 divisors (see below), whose sum is σ = 921141799760. Its totient is φ = 108958867200.

The previous prime is 345611884561. The next prime is 345611884669. The reversal of 345611884572 is 275488116543.

It is a happy number.

345611884572 is a `hidden beast` number, since 3 + 4 + 5 + 6 + 1 + 188 + 457 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9283 + ... + 831450.

Almost surely, 2^345611884572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345611884572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460570899880).

345611884572 is an abundant number, since it is smaller than the sum of its proper divisors (575529915188).

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

345611884572 is a wasteful number, since it uses less digits than its factorization.

345611884572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841363 (or 841358 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 345611884572 in words is "three hundred forty-five billion, six hundred eleven million, eight hundred eighty-four thousand, five hundred seventy-two".