20707251453340 has 48 divisors (see below), whose sum is σ = 45484186245120. Its totient is φ = 7903865625920.

The previous prime is 20707251453289. The next prime is 20707251453359. The reversal of 20707251453340 is 4335415270702.

It is a congruent number.

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, 53525356 + ... + 53910835.

It is an arithmetic number, because the mean of its divisors is an integer number (947587213440).

Almost surely, 2^{20707251453340} is an apocalyptic number.

20707251453340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20707251453340 is an abundant number, since it is smaller than the sum of its proper divisors (24776934791780).

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

20707251453340 is a wasteful number, since it uses less digits than its factorization.

20707251453340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107436642 (or 107436640 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 43.

The spelling of 20707251453340 in words is "twenty trillion, seven hundred seven billion, two hundred fifty-one million, four hundred fifty-three thousand, three hundred forty".