21601673424342 has 24 divisors (see below), whose sum is σ = 51058500821640. Its totient is φ = 6545961643680.

The previous prime is 21601673424319. The next prime is 21601673424367. The reversal of 21601673424342 is 24342437610612.

21601673424342 is a `hidden beast` number, since 2 + 1 + 60 + 167 + 3 + 424 + 3 + 4 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54549680167 + ... + 54549680562.

It is an arithmetic number, because the mean of its divisors is an integer number (2127437534235).

Almost surely, 2^{21601673424342} is an apocalyptic number.

21601673424342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21601673424342 is an abundant number, since it is smaller than the sum of its proper divisors (29456827397298).

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

21601673424342 is a wasteful number, since it uses less digits than its factorization.

21601673424342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109099360748 (or 109099360745 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

The spelling of 21601673424342 in words is "twenty-one trillion, six hundred one billion, six hundred seventy-three million, four hundred twenty-four thousand, three hundred forty-two".