126456654621 has 8 divisors (see below), whose sum is σ = 183936952224. Its totient is φ = 76640396720.

The previous prime is 126456654617. The next prime is 126456654647.

It is a happy number.

126456654621 is nontrivially palindromic in base 10.

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 126456654621 - 2² = 126456654617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126456659621) 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, 1916009886 + ... + 1916009951.

It is an arithmetic number, because the mean of its divisors is an integer number (22992119028).

Almost surely, 2^126456654621 is an apocalyptic number.

126456654621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126456654621 is a deficient number, since it is larger than the sum of its proper divisors (57480297603).

126456654621 is a wasteful number, since it uses less digits than its factorization.

126456654621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832019851.

The product of its digits is 2073600, while the sum is 48.

The spelling of 126456654621 in words is "one hundred twenty-six billion, four hundred fifty-six million, six hundred fifty-four thousand, six hundred twenty-one".