1123620737651 has 4 divisors (see below), whose sum is σ = 1129442606952. Its totient is φ = 1117798868352.

The previous prime is 1123620737611. The next prime is 1123620737671. The reversal of 1123620737651 is 1567370263211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1123620737651 - 2⁶ = 1123620737587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123620737611) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2910934361 + ... + 2910934746.

It is an arithmetic number, because the mean of its divisors is an integer number (282360651738).

Almost surely, 2^{1123620737651} is an apocalyptic number.

1123620737651 is a deficient number, since it is larger than the sum of its proper divisors (5821869301).

1123620737651 is an equidigital number, since it uses as much as digits as its factorization.

1123620737651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5821869300.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 1123620737651 in words is "one trillion, one hundred twenty-three billion, six hundred twenty million, seven hundred thirty-seven thousand, six hundred fifty-one".