20401421414 has 16 divisors (see below), whose sum is σ = 33786365760. Its totient is φ = 9161645160.

The previous prime is 20401421413. The next prime is 20401421419. The reversal of 20401421414 is 41412410402.

20401421414 = 15637² + 15638² + ... + 15719².

It is a self number, because there is not a number n which added to its sum of digits gives 20401421414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401421413) 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, 5584544 + ... + 5588195.

It is an arithmetic number, because the mean of its divisors is an integer number (2111647860).

Almost surely, 2^20401421414 is an apocalyptic number.

20401421414 is a deficient number, since it is larger than the sum of its proper divisors (13384944346).

20401421414 is a wasteful number, since it uses less digits than its factorization.

20401421414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11172835.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 20401421414 its reverse (41412410402), we get a palindrome (61813831816).

The spelling of 20401421414 in words is "twenty billion, four hundred one million, four hundred twenty-one thousand, four hundred fourteen".