20440722412 has 48 divisors (see below), whose sum is σ = 41816621952. Its totient is φ = 8639310080.

The previous prime is 20440722397. The next prime is 20440722427. The reversal of 20440722412 is 21422704402.

It is an interprime number because it is at equal distance from previous prime (20440722397) and next prime (20440722427).

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, 102538 + ... + 226705.

It is an arithmetic number, because the mean of its divisors is an integer number (871179624).

Almost surely, 2^20440722412 is an apocalyptic number.

20440722412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20440722412 is an abundant number, since it is smaller than the sum of its proper divisors (21375899540).

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

20440722412 is a wasteful number, since it uses less digits than its factorization.

20440722412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329358 (or 329356 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 28.

The spelling of 20440722412 in words is "twenty billion, four hundred forty million, seven hundred twenty-two thousand, four hundred twelve".