126213651321044 has 48 divisors (see below), whose sum is σ = 254266456219776. Its totient is φ = 53698507286400.

The previous prime is 126213651320987. The next prime is 126213651321049. The reversal of 126213651321044 is 440123156312621.

It is a junction number, because it is equal to n+sod(n) for n = 126213651320992 and 126213651321010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126213651321049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18913559 + ... + 24701214.

It is an arithmetic number, because the mean of its divisors is an integer number (5297217837912).

Almost surely, 2^{126213651321044} is an apocalyptic number.

126213651321044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

126213651321044 is an abundant number, since it is smaller than the sum of its proper divisors (128052804898732).

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

126213651321044 is a wasteful number, since it uses less digits than its factorization.

126213651321044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43615536 (or 43615534 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 126213651321044 in words is "one hundred twenty-six trillion, two hundred thirteen billion, six hundred fifty-one million, three hundred twenty-one thousand, forty-four".