20747267007540 has 96 divisors (see below), whose sum is σ = 60819574999680. Its totient is φ = 5277465693696.

The previous prime is 20747267007503. The next prime is 20747267007589. The reversal of 20747267007540 is 4570076274702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71685199 + ... + 71974038.

It is an arithmetic number, because the mean of its divisors is an integer number (633537239580).

Almost surely, 2^{20747267007540} is an apocalyptic number.

20747267007540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20747267007540 is an abundant number, since it is smaller than the sum of its proper divisors (40072307992140).

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

20747267007540 is a wasteful number, since it uses less digits than its factorization.

20747267007540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143659361 (or 143659359 counting only the distinct ones).

The product of its (nonzero) digits is 4609920, while the sum is 51.

The spelling of 20747267007540 in words is "twenty trillion, seven hundred forty-seven billion, two hundred sixty-seven million, seven thousand, five hundred forty".