126452366521 has 8 divisors (see below), whose sum is σ = 136338386184. Its totient is φ = 116589048960.

The previous prime is 126452366489. The next prime is 126452366567. The reversal of 126452366521 is 125663254621.

It can be written as a sum of positive squares in 4 ways, for example, as 19248510121 + 107203856400 = 138739^2 + 327420^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126452366521 - 2⁵ = 126452366489 is a prime.

It is a super-2 number, since 2×126452366521² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126452166521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5663950 + ... + 5686231.

It is an arithmetic number, because the mean of its divisors is an integer number (17042298273).

Almost surely, 2^126452366521 is an apocalyptic number.

It is an amenable number.

126452366521 is a deficient number, since it is larger than the sum of its proper divisors (9886019663).

126452366521 is a wasteful number, since it uses less digits than its factorization.

126452366521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11351051.

The product of its digits is 518400, while the sum is 43.

The spelling of 126452366521 in words is "one hundred twenty-six billion, four hundred fifty-two million, three hundred sixty-six thousand, five hundred twenty-one".