20542260662 has 16 divisors (see below), whose sum is σ = 38416695552. Its totient is φ = 8003478120.

The previous prime is 20542260659. The next prime is 20542260671. The reversal of 20542260662 is 26606224502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66695498 + ... + 66695805.

It is an arithmetic number, because the mean of its divisors is an integer number (2401043472).

Almost surely, 2^20542260662 is an apocalyptic number.

20542260662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20542260662 is a deficient number, since it is larger than the sum of its proper divisors (17874434890).

20542260662 is a wasteful number, since it uses less digits than its factorization.

20542260662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133391323.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 20542260662 in words is "twenty billion, five hundred forty-two million, two hundred sixty thousand, six hundred sixty-two".