20401004343 has 16 divisors (see below), whose sum is σ = 28807384320. Its totient is φ = 12797978496.

The previous prime is 20401004341. The next prime is 20401004357. The reversal of 20401004343 is 34340010402.

It is not a de Polignac number, because 20401004343 - 2¹ = 20401004341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401004341) 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, 223638 + ... + 301356.

It is an arithmetic number, because the mean of its divisors is an integer number (1800461520).

Almost surely, 2^20401004343 is an apocalyptic number.

20401004343 is a deficient number, since it is larger than the sum of its proper divisors (8406379977).

20401004343 is a wasteful number, since it uses less digits than its factorization.

20401004343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82886.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20401004343 its reverse (34340010402), we get a palindrome (54741014745).

The spelling of 20401004343 in words is "twenty billion, four hundred one million, four thousand, three hundred forty-three".