10125726470021 has 2 divisors, whose sum is σ = 10125726470022. Its totient is φ = 10125726470020.

The previous prime is 10125726469921. The next prime is 10125726470051. The reversal of 10125726470021 is 12007462752101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8840929156900 + 1284797313121 = 2973370^2 + 1133489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10125726470021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10125726470051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5062863235010 + 5062863235011.

It is an arithmetic number, because the mean of its divisors is an integer number (5062863235011).

Almost surely, 2^{10125726470021} is an apocalyptic number.

It is an amenable number.

10125726470021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10125726470021 is an equidigital number, since it uses as much as digits as its factorization.

10125726470021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 10125726470021 in words is "ten trillion, one hundred twenty-five billion, seven hundred twenty-six million, four hundred seventy thousand, twenty-one".