20531404032354 has 48 divisors (see below), whose sum is σ = 47170419390432. Its totient is φ = 6431793945984.

The previous prime is 20531404032319. The next prime is 20531404032437. The reversal of 20531404032354 is 45323040413502.

20531404032354 is a `hidden beast` number, since 2 + 0 + 5 + 3 + 14 + 0 + 403 + 235 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48909664 + ... + 49327659.

It is an arithmetic number, because the mean of its divisors is an integer number (982717070634).

Almost surely, 2^{20531404032354} is an apocalyptic number.

20531404032354 is an abundant number, since it is smaller than the sum of its proper divisors (26639015358078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20531404032354 is a wasteful number, since it uses less digits than its factorization.

20531404032354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98238031 (or 98238028 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 20531404032354 its reverse (45323040413502), we get a palindrome (65854444445856).

The spelling of 20531404032354 in words is "twenty trillion, five hundred thirty-one billion, four hundred four million, thirty-two thousand, three hundred fifty-four".