345421881578 has 32 divisors (see below), whose sum is σ = 522945279360. Its totient is φ = 171115130880.

The previous prime is 345421881577. The next prime is 345421881613. The reversal of 345421881578 is 875188124543.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (345421881577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188651123 + ... + 188652953.

It is an arithmetic number, because the mean of its divisors is an integer number (16342039980).

Almost surely, 2^345421881578 is an apocalyptic number.

345421881578 is a deficient number, since it is larger than the sum of its proper divisors (177523397782).

345421881578 is a wasteful number, since it uses less digits than its factorization.

345421881578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662.

The product of its digits is 8601600, while the sum is 56.

The spelling of 345421881578 in words is "three hundred forty-five billion, four hundred twenty-one million, eight hundred eighty-one thousand, five hundred seventy-eight".