345522505461021 has 48 divisors (see below), whose sum is σ = 604406306095488. Its totient is φ = 185683288550400.

The previous prime is 345522505460999. The next prime is 345522505461031. The reversal of 345522505461021 is 120164505225543.

345522505461021 is a `hidden beast` number, since 3 + 4 + 5 + 5 + 2 + 2 + 5 + 0 + 5 + 4 + 610 + 21 = 666.

It is not a de Polignac number, because 345522505461021 - 2¹³ = 345522505452829 is a prime.

It is a super-2 number, since 2×345522505461021² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345522505461031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123565720 + ... + 126331041.

It is an arithmetic number, because the mean of its divisors is an integer number (12591798043656).

Almost surely, 2^{345522505461021} is an apocalyptic number.

It is an amenable number.

345522505461021 is a deficient number, since it is larger than the sum of its proper divisors (258883800634467).

345522505461021 is a wasteful number, since it uses less digits than its factorization.

345522505461021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249898082 (or 249898079 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 45.

The spelling of 345522505461021 in words is "three hundred forty-five trillion, five hundred twenty-two billion, five hundred five million, four hundred sixty-one thousand, twenty-one".