20456531365342 has 16 divisors (see below), whose sum is σ = 30881082107952. Its totient is φ = 10162965496320.

The previous prime is 20456531365337. The next prime is 20456531365343. The reversal of 20456531365342 is 24356313565402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20456531365343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31722009 + ... + 32360452.

It is an arithmetic number, because the mean of its divisors is an integer number (1930067631747).

Almost surely, 2^{20456531365342} is an apocalyptic number.

20456531365342 is a deficient number, since it is larger than the sum of its proper divisors (10424550742610).

20456531365342 is a wasteful number, since it uses less digits than its factorization.

20456531365342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64083483.

The product of its (nonzero) digits is 7776000, while the sum is 49.

The spelling of 20456531365342 in words is "twenty trillion, four hundred fifty-six billion, five hundred thirty-one million, three hundred sixty-five thousand, three hundred forty-two".