87548906447 has 4 divisors (see below), whose sum is σ = 87696544320. Its totient is φ = 87401268576.

The previous prime is 87548906411. The next prime is 87548906537. The reversal of 87548906447 is 74460984578.

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

It is a cyclic number.

It is not a de Polignac number, because 87548906447 - 2²⁰ = 87547857871 is a prime.

It is a super-2 number, since 2×87548906447² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87548906447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87548906147) 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, 73818047 + ... + 73819232.

It is an arithmetic number, because the mean of its divisors is an integer number (21924136080).

Almost surely, 2^87548906447 is an apocalyptic number.

87548906447 is a deficient number, since it is larger than the sum of its proper divisors (147637873).

87548906447 is a wasteful number, since it uses less digits than its factorization.

87548906447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147637872.

The product of its (nonzero) digits is 54190080, while the sum is 62.

The spelling of 87548906447 in words is "eighty-seven billion, five hundred forty-eight million, nine hundred six thousand, four hundred forty-seven".