1223637646742 has 8 divisors (see below), whose sum is σ = 2097664537296. Its totient is φ = 524416134312.

The previous prime is 1223637646741. The next prime is 1223637646747. The reversal of 1223637646742 is 2476467363221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223637646741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43701344513 + ... + 43701344540.

It is an arithmetic number, because the mean of its divisors is an integer number (262208067162).

Almost surely, 2^{1223637646742} is an apocalyptic number.

1223637646742 is a deficient number, since it is larger than the sum of its proper divisors (874026890554).

1223637646742 is an equidigital number, since it uses as much as digits as its factorization.

1223637646742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87402689062.

The product of its digits is 12192768, while the sum is 53.

The spelling of 1223637646742 in words is "one trillion, two hundred twenty-three billion, six hundred thirty-seven million, six hundred forty-six thousand, seven hundred forty-two".