47971489515601 has 4 divisors (see below), whose sum is σ = 48177375736932. Its totient is φ = 47765603294272.

The previous prime is 47971489515581. The next prime is 47971489515611. The reversal of 47971489515601 is 10651598417974.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7039337580625 + 40932151934976 = 2653175^2 + 6397824^2 .

It is a cyclic number.

It is not a de Polignac number, because 47971489515601 - 2⁵ = 47971489515569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47971489515611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102943110316 + ... + 102943110781.

It is an arithmetic number, because the mean of its divisors is an integer number (12044343934233).

Almost surely, 2^{47971489515601} is an apocalyptic number.

It is an amenable number.

47971489515601 is a deficient number, since it is larger than the sum of its proper divisors (205886221331).

47971489515601 is a wasteful number, since it uses less digits than its factorization.

47971489515601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205886221330.

The product of its (nonzero) digits is 76204800, while the sum is 67.

The spelling of 47971489515601 in words is "forty-seven trillion, nine hundred seventy-one billion, four hundred eighty-nine million, five hundred fifteen thousand, six hundred one".