20127063215564 has 6 divisors (see below), whose sum is σ = 35222360627244. Its totient is φ = 10063531607780.

The previous prime is 20127063215549. The next prime is 20127063215587. The reversal of 20127063215564 is 46551236072102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2515882901942 + ... + 2515882901949.

It is an arithmetic number, because the mean of its divisors is an integer number (5870393437874).

Almost surely, 2^{20127063215564} is an apocalyptic number.

It is an amenable number.

20127063215564 is a deficient number, since it is larger than the sum of its proper divisors (15095297411680).

20127063215564 is a wasteful number, since it uses less digits than its factorization.

20127063215564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031765803895 (or 5031765803893 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

Adding to 20127063215564 its reverse (46551236072102), we get a palindrome (66678299287666).

The spelling of 20127063215564 in words is "twenty trillion, one hundred twenty-seven billion, sixty-three million, two hundred fifteen thousand, five hundred sixty-four".