345404621532 has 12 divisors (see below), whose sum is σ = 805944116936. Its totient is φ = 115134873840.

The previous prime is 345404621489. The next prime is 345404621537. The reversal of 345404621532 is 235126404543.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345404621537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14391859219 + ... + 14391859242.

Almost surely, 2^345404621532 is an apocalyptic number.

It is an amenable number.

345404621532 is an abundant number, since it is smaller than the sum of its proper divisors (460539495404).

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

345404621532 is a wasteful number, since it uses less digits than its factorization.

345404621532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28783718468 (or 28783718466 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 345404621532 in words is "three hundred forty-five billion, four hundred four million, six hundred twenty-one thousand, five hundred thirty-two".