126444337918 has 4 divisors (see below), whose sum is σ = 189666506880. Its totient is φ = 63222168958.

The previous prime is 126444337913. The next prime is 126444337919. The reversal of 126444337918 is 819733444621.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126444337913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31611084478 + ... + 31611084481.

It is an arithmetic number, because the mean of its divisors is an integer number (47416626720).

Almost surely, 2^126444337918 is an apocalyptic number.

126444337918 is a deficient number, since it is larger than the sum of its proper divisors (63222168962).

126444337918 is an equidigital number, since it uses as much as digits as its factorization.

126444337918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63222168961.

The product of its digits is 3483648, while the sum is 52.

The spelling of 126444337918 in words is "one hundred twenty-six billion, four hundred forty-four million, three hundred thirty-seven thousand, nine hundred eighteen".