20034440873940 has 48 divisors (see below), whose sum is σ = 56432341268352. Its totient is φ = 5310526440576.

The previous prime is 20034440873929. The next prime is 20034440873947. The reversal of 20034440873940 is 4937804443002.

It is a happy number.

It is a super-2 number, since 2×20034440873940² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20034440873940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20034440873947) 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, 999712579 + ... + 999732618.

It is an arithmetic number, because the mean of its divisors is an integer number (1175673776424).

Almost surely, 2^{20034440873940} is an apocalyptic number.

20034440873940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20034440873940 is an abundant number, since it is smaller than the sum of its proper divisors (36397900394412).

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

20034440873940 is a wasteful number, since it uses less digits than its factorization.

20034440873940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999445376 (or 1999445374 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 48.

The spelling of 20034440873940 in words is "twenty trillion, thirty-four billion, four hundred forty million, eight hundred seventy-three thousand, nine hundred forty".