20012332140 has 72 divisors (see below), whose sum is σ = 61472523840. Its totient is φ = 5269065984.

The previous prime is 20012332111. The next prime is 20012332181. The reversal of 20012332140 is 4123321002.

It is a super-3 number, since 3×20012332140³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 689449 + ... + 717888.

Almost surely, 2^20012332140 is an apocalyptic number.

20012332140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012332140 is an abundant number, since it is smaller than the sum of its proper divisors (41460191700).

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

20012332140 is a wasteful number, since it uses less digits than its factorization.

20012332140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407431 (or 1407426 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20012332140 its reverse (4123321002), we get a palindrome (24135653142).

The spelling of 20012332140 in words is "twenty billion, twelve million, three hundred thirty-two thousand, one hundred forty".