47719261487 has 4 divisors (see below), whose sum is σ = 47985849720. Its totient is φ = 47452673256.

The previous prime is 47719261483. The next prime is 47719261493. The reversal of 47719261487 is 78416291774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78416291774 = 2 ⋅39208145887.

It is a cyclic number.

It is not a de Polignac number, because 47719261487 - 2² = 47719261483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47719261483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133293848 + ... + 133294205.

It is an arithmetic number, because the mean of its divisors is an integer number (11996462430).

Almost surely, 2^47719261487 is an apocalyptic number.

47719261487 is a deficient number, since it is larger than the sum of its proper divisors (266588233).

47719261487 is a wasteful number, since it uses less digits than its factorization.

47719261487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266588232.

The product of its digits is 4741632, while the sum is 56.

The spelling of 47719261487 in words is "forty-seven billion, seven hundred nineteen million, two hundred sixty-one thousand, four hundred eighty-seven".