126500004473 has 2 divisors, whose sum is σ = 126500004474. Its totient is φ = 126500004472.

The previous prime is 126500004457. The next prime is 126500004493. The reversal of 126500004473 is 374400005621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116180085904 + 10319918569 = 340852^2 + 101587^2 .

It is a cyclic number.

It is not a de Polignac number, because 126500004473 - 2⁴ = 126500004457 is a prime.

It is a super-2 number, since 2×126500004473² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126500004493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63250002236 + 63250002237.

It is an arithmetic number, because the mean of its divisors is an integer number (63250002237).

Almost surely, 2^126500004473 is an apocalyptic number.

It is an amenable number.

126500004473 is a deficient number, since it is larger than the sum of its proper divisors (1).

126500004473 is an equidigital number, since it uses as much as digits as its factorization.

126500004473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 126500004473 in words is "one hundred twenty-six billion, five hundred million, four thousand, four hundred seventy-three".