48971217681 has 16 divisors (see below), whose sum is σ = 72581766400. Its totient is φ = 32633162064.

The previous prime is 48971217623. The next prime is 48971217707. The reversal of 48971217681 is 18671217984.

48971217681 is a `hidden beast` number, since 489 + 7 + 12 + 1 + 76 + 81 = 666.

It is not a de Polignac number, because 48971217681 - 2¹³ = 48971209489 is a prime.

It is a super-2 number, since 2×48971217681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (48971217781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334786 + ... + 458283.

It is an arithmetic number, because the mean of its divisors is an integer number (4536360400).

Almost surely, 2^48971217681 is an apocalyptic number.

It is an amenable number.

48971217681 is a deficient number, since it is larger than the sum of its proper divisors (23610548719).

48971217681 is a wasteful number, since it uses less digits than its factorization.

48971217681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795365 (or 795359 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 54.

The spelling of 48971217681 in words is "forty-eight billion, nine hundred seventy-one million, two hundred seventeen thousand, six hundred eighty-one".