20242609881 has 16 divisors (see below), whose sum is σ = 29074651200. Its totient is φ = 12453416640.

The previous prime is 20242609859. The next prime is 20242609943. The reversal of 20242609881 is 18890624202.

It is not a de Polignac number, because 20242609881 - 2²² = 20238415577 is a prime.

It is a super-2 number, since 2×20242609881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20242609181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66595 + ... + 211943.

It is an arithmetic number, because the mean of its divisors is an integer number (1817165700).

Almost surely, 2^20242609881 is an apocalyptic number.

It is an amenable number.

20242609881 is a deficient number, since it is larger than the sum of its proper divisors (8832041319).

20242609881 is a wasteful number, since it uses less digits than its factorization.

20242609881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148936.

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 20242609881 in words is "twenty billion, two hundred forty-two million, six hundred nine thousand, eight hundred eighty-one".