20622615140 has 36 divisors (see below), whose sum is σ = 44852385396. Its totient is φ = 7964589696.

The previous prime is 20622615127. The next prime is 20622615151. The reversal of 20622615140 is 4151622602.

It can be written as a sum of positive squares in 6 ways, for example, as 743871076 + 19878744064 = 27274^2 + 140992^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 596219 + ... + 629858.

Almost surely, 2^20622615140 is an apocalyptic number.

20622615140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20622615140 is an abundant number, since it is smaller than the sum of its proper divisors (24229770256).

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

20622615140 is a wasteful number, since it uses less digits than its factorization.

20622615140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226144 (or 1226113 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 20622615140 in words is "twenty billion, six hundred twenty-two million, six hundred fifteen thousand, one hundred forty".