20401423293 has 8 divisors (see below), whose sum is σ = 27207599328. Its totient is φ = 13598098064.

The previous prime is 20401423267. The next prime is 20401423307. The reversal of 20401423293 is 39232410402.

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 20401423293 - 2¹⁸ = 20401161149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20401423293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401423253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695946 + ... + 724667.

It is an arithmetic number, because the mean of its divisors is an integer number (3400949916).

Almost surely, 2^20401423293 is an apocalyptic number.

It is an amenable number.

20401423293 is a deficient number, since it is larger than the sum of its proper divisors (6806176035).

20401423293 is a wasteful number, since it uses less digits than its factorization.

20401423293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425403.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 20401423293 its reverse (39232410402), we get a palindrome (59633833695).

The spelling of 20401423293 in words is "twenty billion, four hundred one million, four hundred twenty-three thousand, two hundred ninety-three".