126054444651 has 4 divisors (see below), whose sum is σ = 168072592872. Its totient is φ = 84036296432.

The previous prime is 126054444647. The next prime is 126054444701. The reversal of 126054444651 is 156444450621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126054444651 - 2² = 126054444647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126054424651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21009074106 + ... + 21009074111.

It is an arithmetic number, because the mean of its divisors is an integer number (42018148218).

Almost surely, 2^126054444651 is an apocalyptic number.

126054444651 is a deficient number, since it is larger than the sum of its proper divisors (42018148221).

126054444651 is an equidigital number, since it uses as much as digits as its factorization.

126054444651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42018148220.

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 126054444651 in words is "one hundred twenty-six billion, fifty-four million, four hundred forty-four thousand, six hundred fifty-one".