126801550056 has 64 divisors (see below), whose sum is σ = 330892905600. Its totient is φ = 40416493568.

The previous prime is 126801550039. The next prime is 126801550061. The reversal of 126801550056 is 650055108621.

It is a junction number, because it is equal to n+sod(n) for n = 126801549996 and 126801550023.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1762600 + ... + 1833128.

It is an arithmetic number, because the mean of its divisors is an integer number (5170201650).

Almost surely, 2^126801550056 is an apocalyptic number.

It is an amenable number.

126801550056 is an abundant number, since it is smaller than the sum of its proper divisors (204091355544).

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

126801550056 is a wasteful number, since it uses less digits than its factorization.

126801550056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73818 (or 73814 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

Adding to 126801550056 its reverse (650055108621), we get a palindrome (776856658677).

The spelling of 126801550056 in words is "one hundred twenty-six billion, eight hundred one million, five hundred fifty thousand, fifty-six".