345890881672 has 32 divisors (see below), whose sum is σ = 741287347200. Its totient is φ = 148220429184.

The previous prime is 345890881663. The next prime is 345890881673. The reversal of 345890881672 is 276188098543.

It is a self number, because there is not a number n which added to its sum of digits gives 345890881672.

It is not an unprimeable number, because it can be changed into a prime (345890881673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71193 + ... + 834775.

It is an arithmetic number, because the mean of its divisors is an integer number (23165229600).

It is a 1-persistent number, because it is pandigital, but 2⋅345890881672 = 691781763344 is not.

Almost surely, 2^345890881672 is an apocalyptic number.

It is an amenable number.

345890881672 is an abundant number, since it is smaller than the sum of its proper divisors (395396465528).

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

345890881672 is a wasteful number, since it uses less digits than its factorization.

345890881672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771685 (or 771681 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 61.

The spelling of 345890881672 in words is "three hundred forty-five billion, eight hundred ninety million, eight hundred eighty-one thousand, six hundred seventy-two".