1298099421623 has 16 divisors (see below), whose sum is σ = 1333709465760. Its totient is φ = 1262679667200.

The previous prime is 1298099421617. The next prime is 1298099421637. The reversal of 1298099421623 is 3261249908921.

It is a cyclic number.

It is not a de Polignac number, because 1298099421623 - 2³⁰ = 1297025679799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298099421323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53768411 + ... + 53792547.

It is an arithmetic number, because the mean of its divisors is an integer number (83356841610).

Almost surely, 2^{1298099421623} is an apocalyptic number.

1298099421623 is a deficient number, since it is larger than the sum of its proper divisors (35610044137).

1298099421623 is a wasteful number, since it uses less digits than its factorization.

1298099421623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28018.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The spelling of 1298099421623 in words is "one trillion, two hundred ninety-eight billion, ninety-nine million, four hundred twenty-one thousand, six hundred twenty-three".