1123631703656 has 128 divisors (see below), whose sum is σ = 2782386028800. Its totient is φ = 411848478720.

The previous prime is 1123631703637. The next prime is 1123631703671. The reversal of 1123631703656 is 6563071363211.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25498250 + ... + 25542278.

It is an arithmetic number, because the mean of its divisors is an integer number (21737390850).

Almost surely, 2^{1123631703656} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123631703656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1391193014400).

1123631703656 is an abundant number, since it is smaller than the sum of its proper divisors (1658754325144).

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

1123631703656 is a wasteful number, since it uses less digits than its factorization.

1123631703656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46507 (or 46503 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 1123631703656 in words is "one trillion, one hundred twenty-three billion, six hundred thirty-one million, seven hundred three thousand, six hundred fifty-six".