20477020132240 has 40 divisors (see below), whose sum is σ = 54410367781440. Its totient is φ = 7020692616576.

The previous prime is 20477020132201. The next prime is 20477020132259. The reversal of 20477020132240 is 4223102077402.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 20477020132196 and 20477020132205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18283053130 + ... + 18283054249.

It is an arithmetic number, because the mean of its divisors is an integer number (1360259194536).

Almost surely, 2^{20477020132240} is an apocalyptic number.

20477020132240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20477020132240 is an abundant number, since it is smaller than the sum of its proper divisors (33933347649200).

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

20477020132240 is a wasteful number, since it uses less digits than its factorization.

20477020132240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36566107399 (or 36566107393 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 34.

The spelling of 20477020132240 in words is "twenty trillion, four hundred seventy-seven billion, twenty million, one hundred thirty-two thousand, two hundred forty".