345404621540 has 24 divisors (see below), whose sum is σ = 791290588032. Its totient is φ = 125601680480.

The previous prime is 345404621537. The next prime is 345404621557. The reversal of 345404621540 is 45126404543.

It is a junction number, because it is equal to n+sod(n) for n = 345404621494 and 345404621503.

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 7 ways as a sum of consecutive naturals, for example, 785010284 + ... + 785010723.

It is an arithmetic number, because the mean of its divisors is an integer number (32970441168).

Almost surely, 2^345404621540 is an apocalyptic number.

It is an amenable number.

345404621540 is an abundant number, since it is smaller than the sum of its proper divisors (445885966492).

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

345404621540 is a wasteful number, since it uses less digits than its factorization.

345404621540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570021027 (or 1570021025 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 345404621540 in words is "three hundred forty-five billion, four hundred four million, six hundred twenty-one thousand, five hundred forty".