1233455556679 has 8 divisors (see below), whose sum is σ = 1266814123488. Its totient is φ = 1200098144160.

The previous prime is 1233455556661. The next prime is 1233455556691. The reversal of 1233455556679 is 9766555543321.

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

It is a cyclic number.

It is not a de Polignac number, because 1233455556679 - 2⁹ = 1233455556167 is a prime.

It is a super-2 number, since 2×1233455556679² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233455556659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2153109 + ... + 2665105.

It is an arithmetic number, because the mean of its divisors is an integer number (158351765436).

Almost surely, 2^{1233455556679} is an apocalyptic number.

1233455556679 is a deficient number, since it is larger than the sum of its proper divisors (33358566809).

1233455556679 is an equidigital number, since it uses as much as digits as its factorization.

1233455556679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577145.

The product of its digits is 102060000, while the sum is 61.

The spelling of 1233455556679 in words is "one trillion, two hundred thirty-three billion, four hundred fifty-five million, five hundred fifty-six thousand, six hundred seventy-nine".