20477446091740 has 48 divisors (see below), whose sum is σ = 47118628174464. Its totient is φ = 7413540737600.

The previous prime is 20477446091659. The next prime is 20477446091741. The reversal of 20477446091740 is 4719064477402.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20477446091741) 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, 204970546 + ... + 205070425.

It is an arithmetic number, because the mean of its divisors is an integer number (981638086968).

Almost surely, 2^{20477446091740} is an apocalyptic number.

20477446091740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20477446091740 is an abundant number, since it is smaller than the sum of its proper divisors (26641182082724).

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

20477446091740 is a wasteful number, since it uses less digits than its factorization.

20477446091740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410041218 (or 410041216 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 55.

The spelling of 20477446091740 in words is "twenty trillion, four hundred seventy-seven billion, four hundred forty-six million, ninety-one thousand, seven hundred forty".