2023155601421 has 4 divisors (see below), whose sum is σ = 2129637475200. Its totient is φ = 1916673727644.

The previous prime is 2023155601399. The next prime is 2023155601471. The reversal of 2023155601421 is 1241065513202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2023155601421 is a prime.

It is a super-2 number, since 2×2023155601421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023155601471) 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, 53240936861 + ... + 53240936898.

It is an arithmetic number, because the mean of its divisors is an integer number (532409368800).

Almost surely, 2^{2023155601421} is an apocalyptic number.

It is an amenable number.

2023155601421 is a deficient number, since it is larger than the sum of its proper divisors (106481873779).

2023155601421 is a wasteful number, since it uses less digits than its factorization.

2023155601421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106481873778.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 2023155601421 in words is "two trillion, twenty-three billion, one hundred fifty-five million, six hundred one thousand, four hundred twenty-one".