126076670521 has 2 divisors, whose sum is σ = 126076670522. Its totient is φ = 126076670520.

The previous prime is 126076670507. The next prime is 126076670561. The reversal of 126076670521 is 125076670621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108264031225 + 17812639296 = 329035^2 + 133464^2 .

It is a cyclic number.

It is not a de Polignac number, because 126076670521 - 2²¹ = 126074573369 is a prime.

It is a super-2 number, since 2×126076670521² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126076670561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63038335260 + 63038335261.

It is an arithmetic number, because the mean of its divisors is an integer number (63038335261).

Almost surely, 2^126076670521 is an apocalyptic number.

It is an amenable number.

126076670521 is a deficient number, since it is larger than the sum of its proper divisors (1).

126076670521 is an equidigital number, since it uses as much as digits as its factorization.

126076670521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 126076670521 in words is "one hundred twenty-six billion, seventy-six million, six hundred seventy thousand, five hundred twenty-one".