20401971130894 has 4 divisors (see below), whose sum is σ = 30602956696344. Its totient is φ = 10200985565446.

The previous prime is 20401971130889. The next prime is 20401971130949. The reversal of 20401971130894 is 49803117910402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100492782722 + ... + 5100492782725.

It is an arithmetic number, because the mean of its divisors is an integer number (7650739174086).

Almost surely, 2^{20401971130894} is an apocalyptic number.

20401971130894 is a deficient number, since it is larger than the sum of its proper divisors (10200985565450).

20401971130894 is a wasteful number, since it uses less digits than its factorization.

20401971130894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10200985565449.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 20401971130894 in words is "twenty trillion, four hundred one billion, nine hundred seventy-one million, one hundred thirty thousand, eight hundred ninety-four".