126839245651 has 8 divisors (see below), whose sum is σ = 126941976464. Its totient is φ = 126736552800.

The previous prime is 126839245627. The next prime is 126839245667. The reversal of 126839245651 is 156542938621.

It is a happy number.

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 126839245651 - 2²¹ = 126837148499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126839245691) 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, 12805801 + ... + 12815701.

It is an arithmetic number, because the mean of its divisors is an integer number (15867747058).

Almost surely, 2^126839245651 is an apocalyptic number.

126839245651 is a deficient number, since it is larger than the sum of its proper divisors (102730813).

126839245651 is an equidigital number, since it uses as much as digits as its factorization.

126839245651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18981.

The product of its digits is 3110400, while the sum is 52.

The spelling of 126839245651 in words is "one hundred twenty-six billion, eight hundred thirty-nine million, two hundred forty-five thousand, six hundred fifty-one".