68499146487 has 4 divisors (see below), whose sum is σ = 91332195320. Its totient is φ = 45666097656.

The previous prime is 68499146477. The next prime is 68499146557. The reversal of 68499146487 is 78464199486.

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

It is not a de Polignac number, because 68499146487 - 2³⁰ = 67425404663 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 (68499146407) 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, 11416524412 + ... + 11416524417.

It is an arithmetic number, because the mean of its divisors is an integer number (22833048830).

Almost surely, 2^68499146487 is an apocalyptic number.

68499146487 is a deficient number, since it is larger than the sum of its proper divisors (22833048833).

68499146487 is a wasteful number, since it uses less digits than its factorization.

68499146487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22833048832.

The product of its digits is 83607552, while the sum is 66.

The spelling of 68499146487 in words is "sixty-eight billion, four hundred ninety-nine million, one hundred forty-six thousand, four hundred eighty-seven".