20042422407997 has 32 divisors (see below), whose sum is σ = 23072947228800. Its totient is φ = 17218133452800.

The previous prime is 20042422407989. The next prime is 20042422408009. The reversal of 20042422407997 is 79970422424002.

It is a cyclic number.

It is not a de Polignac number, because 20042422407997 - 2³ = 20042422407989 is a prime.

It is a super-3 number, since 3×20042422407997³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042422407967) 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, 1317099733 + ... + 1317114949.

It is an arithmetic number, because the mean of its divisors is an integer number (721029600900).

Almost surely, 2^{20042422407997} is an apocalyptic number.

It is an amenable number.

20042422407997 is a deficient number, since it is larger than the sum of its proper divisors (3030524820803).

20042422407997 is a wasteful number, since it uses less digits than its factorization.

20042422407997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30637.

The product of its (nonzero) digits is 4064256, while the sum is 52.

The spelling of 20042422407997 in words is "twenty trillion, forty-two billion, four hundred twenty-two million, four hundred seven thousand, nine hundred ninety-seven".