20127063215540 has 24 divisors (see below), whose sum is σ = 42519927566592. Its totient is φ = 8002616750240.

The previous prime is 20127063215513. The next prime is 20127063215549. The reversal of 20127063215540 is 4551236072102.

It is a junction number, because it is equal to n+sod(n) for n = 20127063215494 and 20127063215503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20127063215549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3013030076 + ... + 3013036755.

It is an arithmetic number, because the mean of its divisors is an integer number (1771663648608).

Almost surely, 2^{20127063215540} is an apocalyptic number.

20127063215540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20127063215540 is an abundant number, since it is smaller than the sum of its proper divisors (22392864351052).

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

20127063215540 is a wasteful number, since it uses less digits than its factorization.

20127063215540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6026067007 (or 6026067005 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

Adding to 20127063215540 its reverse (4551236072102), we get a palindrome (24678299287642).

The spelling of 20127063215540 in words is "twenty trillion, one hundred twenty-seven billion, sixty-three million, two hundred fifteen thousand, five hundred forty".