20702740046442 has 64 divisors (see below), whose sum is σ = 45910034198784. Its totient is φ = 6190477905920.

The previous prime is 20702740046413. The next prime is 20702740046447. The reversal of 20702740046442 is 24464004720702.

It is a junction number, because it is equal to n+sod(n) for n = 20702740046394 and 20702740046403.

It is not an unprimeable number, because it can be changed into a prime (20702740046447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15043083 + ... + 16361534.

It is an arithmetic number, because the mean of its divisors is an integer number (717344284356).

Almost surely, 2^{20702740046442} is an apocalyptic number.

20702740046442 is an abundant number, since it is smaller than the sum of its proper divisors (25207294152342).

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

20702740046442 is a wasteful number, since it uses less digits than its factorization.

20702740046442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31404943.

The product of its (nonzero) digits is 602112, while the sum is 42.

The spelling of 20702740046442 in words is "twenty trillion, seven hundred two billion, seven hundred forty million, forty-six thousand, four hundred forty-two".