126138733560 has 192 divisors, whose sum is σ = 479411412480. Its totient is φ = 28161181440.

The previous prime is 126138733463. The next prime is 126138733577. The reversal of 126138733560 is 65337831621.

126138733560 is a `hidden beast` number, since 1 + 2 + 6 + 1 + 3 + 87 + 3 + 3 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 473676 + ... + 690395.

It is an arithmetic number, because the mean of its divisors is an integer number (2496934440).

Almost surely, 2^126138733560 is an apocalyptic number.

126138733560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126138733560 is an abundant number, since it is smaller than the sum of its proper divisors (353272678920).

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

126138733560 is a wasteful number, since it uses less digits than its factorization.

126138733560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164138 (or 1164131 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 126138733560 in words is "one hundred twenty-six billion, one hundred thirty-eight million, seven hundred thirty-three thousand, five hundred sixty".