20401012423 has 8 divisors (see below), whose sum is σ = 23023086480. Its totient is φ = 17906844480.

The previous prime is 20401012339. The next prime is 20401012459. The reversal of 20401012423 is 32421010402.

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 20401012423 - 2¹⁷ = 20400881351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20401012423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401012123) 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, 31976190 + ... + 31976827.

It is an arithmetic number, because the mean of its divisors is an integer number (2877885810).

Almost surely, 2^20401012423 is an apocalyptic number.

20401012423 is a deficient number, since it is larger than the sum of its proper divisors (2622074057).

20401012423 is a wasteful number, since it uses less digits than its factorization.

20401012423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63953057.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20401012423 its reverse (32421010402), we get a palindrome (52822022825).

The spelling of 20401012423 in words is "twenty billion, four hundred one million, twelve thousand, four hundred twenty-three".