20420401731306 has 32 divisors (see below), whose sum is σ = 41028331507200. Its totient is φ = 6775557033456.

The previous prime is 20420401731293. The next prime is 20420401731311. The reversal of 20420401731306 is 60313710402402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5964945 + ... + 8741931.

It is an arithmetic number, because the mean of its divisors is an integer number (1282135359600).

Almost surely, 2^{20420401731306} is an apocalyptic number.

20420401731306 is an abundant number, since it is smaller than the sum of its proper divisors (20607929775894).

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

20420401731306 is a wasteful number, since it uses less digits than its factorization.

20420401731306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782618.

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 20420401731306 in words is "twenty trillion, four hundred twenty billion, four hundred one million, seven hundred thirty-one thousand, three hundred six".