20131402450 has 24 divisors (see below), whose sum is σ = 38315212848. Its totient is φ = 7865291280.

The previous prime is 20131402433. The next prime is 20131402453. The reversal of 20131402450 is 5420413102.

It is not an unprimeable number, because it can be changed into a prime (20131402453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4679572 + ... + 4683871.

It is an arithmetic number, because the mean of its divisors is an integer number (1596467202).

Almost surely, 2^20131402450 is an apocalyptic number.

20131402450 is a deficient number, since it is larger than the sum of its proper divisors (18183810398).

20131402450 is a wasteful number, since it uses less digits than its factorization.

20131402450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9363498 (or 9363493 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20131402450 its reverse (5420413102), we get a palindrome (25551815552).

The spelling of 20131402450 in words is "twenty billion, one hundred thirty-one million, four hundred two thousand, four hundred fifty".