126440120365600 has 72 divisors (see below), whose sum is σ = 308735322674688. Its totient is φ = 50565663494400.

The previous prime is 126440120365553. The next prime is 126440120365609. The reversal of 126440120365600 is 6563021044621.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (126440120365609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12326784 + ... + 20120383.

It is an arithmetic number, because the mean of its divisors is an integer number (4287990592704).

Almost surely, 2^{126440120365600} is an apocalyptic number.

126440120365600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126440120365600 is an abundant number, since it is smaller than the sum of its proper divisors (182295202309088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126440120365600 is a wasteful number, since it uses less digits than its factorization.

126440120365600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32452058 (or 32452045 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 126440120365600 in words is "one hundred twenty-six trillion, four hundred forty billion, one hundred twenty million, three hundred sixty-five thousand, six hundred".