20450403135631 has 8 divisors (see below), whose sum is σ = 23372700573600. Its totient is φ = 17528308516608.

The previous prime is 20450403135581. The next prime is 20450403135749. The reversal of 20450403135631 is 13653130405402.

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 20450403135631 - 2⁹ = 20450403135119 is a prime.

It is a super-3 number, since 3×20450403135631³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450403135431) 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, 50488606 + ... + 50892043.

It is an arithmetic number, because the mean of its divisors is an integer number (2921587571700).

Almost surely, 2^{20450403135631} is an apocalyptic number.

20450403135631 is a deficient number, since it is larger than the sum of its proper divisors (2922297437969).

20450403135631 is a wasteful number, since it uses less digits than its factorization.

20450403135631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101409473.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 20450403135631 in words is "twenty trillion, four hundred fifty billion, four hundred three million, one hundred thirty-five thousand, six hundred thirty-one".