1623121686263 has 16 divisors (see below), whose sum is σ = 2088910694400. Its totient is φ = 1223971106400.

The previous prime is 1623121686223. The next prime is 1623121686299. The reversal of 1623121686263 is 3626861213261.

It is not a de Polignac number, because 1623121686263 - 2²⁰ = 1623120637687 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 (1623121686223) 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, 339989588 + ... + 339994361.

It is an arithmetic number, because the mean of its divisors is an integer number (130556918400).

Almost surely, 2^{1623121686263} is an apocalyptic number.

1623121686263 is a deficient number, since it is larger than the sum of its proper divisors (465789008137).

1623121686263 is a wasteful number, since it uses less digits than its factorization.

1623121686263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679983998.

The product of its digits is 746496, while the sum is 47.

The spelling of 1623121686263 in words is "one trillion, six hundred twenty-three billion, one hundred twenty-one million, six hundred eighty-six thousand, two hundred sixty-three".