20401971130895 has 16 divisors (see below), whose sum is σ = 24542496447840. Its totient is φ = 16281494913024.

The previous prime is 20401971130889. The next prime is 20401971130949. The reversal of 20401971130895 is 59803117910402.

It is a cyclic number.

It is not a de Polignac number, because 20401971130895 - 2¹² = 20401971126799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30577487 + ... + 31237583.

It is an arithmetic number, because the mean of its divisors is an integer number (1533906027990).

Almost surely, 2^{20401971130895} is an apocalyptic number.

20401971130895 is a deficient number, since it is larger than the sum of its proper divisors (4140525316945).

20401971130895 is a wasteful number, since it uses less digits than its factorization.

20401971130895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675274.

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 20401971130895 in words is "twenty trillion, four hundred one billion, nine hundred seventy-one million, one hundred thirty thousand, eight hundred ninety-five".