68481797487 has 8 divisors (see below), whose sum is σ = 93251809536. Its totient is φ = 44683158552.

The previous prime is 68481797479. The next prime is 68481797491. The reversal of 68481797487 is 78479718486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68481797487 - 2³ = 68481797479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68481797987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242843113 + ... + 242843394.

It is an arithmetic number, because the mean of its divisors is an integer number (11656476192).

Almost surely, 2^68481797487 is an apocalyptic number.

68481797487 is a deficient number, since it is larger than the sum of its proper divisors (24770012049).

68481797487 is a wasteful number, since it uses less digits than its factorization.

68481797487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485686557.

The product of its digits is 151732224, while the sum is 69.

The spelling of 68481797487 in words is "sixty-eight billion, four hundred eighty-one million, seven hundred ninety-seven thousand, four hundred eighty-seven".