20126450756436 has 24 divisors (see below), whose sum is σ = 47066310244800. Its totient is φ = 6693875231232.

The previous prime is 20126450756417. The next prime is 20126450756443. The reversal of 20126450756436 is 63465705462102.

It is a congruent number.

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, 1867705336 + ... + 1867716111.

It is an arithmetic number, because the mean of its divisors is an integer number (1961096260200).

Almost surely, 2^{20126450756436} is an apocalyptic number.

It is an amenable number.

20126450756436 is an abundant number, since it is smaller than the sum of its proper divisors (26939859488364).

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

20126450756436 is a wasteful number, since it uses less digits than its factorization.

20126450756436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3735421903 (or 3735421901 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 51.

The spelling of 20126450756436 in words is "twenty trillion, one hundred twenty-six billion, four hundred fifty million, seven hundred fifty-six thousand, four hundred thirty-six".