126636244064 has 24 divisors (see below), whose sum is σ = 271980115848. Its totient is φ = 57561928960.

The previous prime is 126636244051. The next prime is 126636244081. The reversal of 126636244064 is 460442636621.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179880677 + ... + 179881380.

It is an arithmetic number, because the mean of its divisors is an integer number (11332504827).

Almost surely, 2^126636244064 is an apocalyptic number.

It is an amenable number.

126636244064 is an abundant number, since it is smaller than the sum of its proper divisors (145343871784).

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

126636244064 is a wasteful number, since it uses less digits than its factorization.

126636244064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359762078 (or 359762070 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 126636244064 in words is "one hundred twenty-six billion, six hundred thirty-six million, two hundred forty-four thousand, sixty-four".