20126256406652 has 48 divisors (see below), whose sum is σ = 38621553594624. Its totient is φ = 9101066016000.

The previous prime is 20126256406651. The next prime is 20126256406657. The reversal of 20126256406652 is 25660465262102.

It is a junction number, because it is equal to n+sod(n) for n = 20126256406597 and 20126256406606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126256406651) 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, 9458327 + ... + 11389137.

It is an arithmetic number, because the mean of its divisors is an integer number (804615699888).

Almost surely, 2^{20126256406652} is an apocalyptic number.

20126256406652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20126256406652 is a deficient number, since it is larger than the sum of its proper divisors (18495297187972).

20126256406652 is a wasteful number, since it uses less digits than its factorization.

20126256406652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932050 (or 1932048 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 20126256406652 in words is "twenty trillion, one hundred twenty-six billion, two hundred fifty-six million, four hundred six thousand, six hundred fifty-two".