126321532597 has 16 divisors (see below), whose sum is σ = 138525266880. Its totient is φ = 114492333312.

The previous prime is 126321532573. The next prime is 126321532633. The reversal of 126321532597 is 795235123621.

It is a cyclic number.

It is not a de Polignac number, because 126321532597 - 2¹⁹ = 126321008309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126321535597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244647 + ... + 559012.

It is an arithmetic number, because the mean of its divisors is an integer number (8657829180).

Almost surely, 2^126321532597 is an apocalyptic number.

It is an amenable number.

126321532597 is a deficient number, since it is larger than the sum of its proper divisors (12203734283).

126321532597 is a wasteful number, since it uses less digits than its factorization.

126321532597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803892.

The product of its digits is 680400, while the sum is 46.

The spelling of 126321532597 in words is "one hundred twenty-six billion, three hundred twenty-one million, five hundred thirty-two thousand, five hundred ninety-seven".