67887431512 has 32 divisors (see below), whose sum is σ = 128050876800. Its totient is φ = 33740987904.

The previous prime is 67887431503. The next prime is 67887431581. The reversal of 67887431512 is 21513478876.

It is a super-2 number, since 2×67887431512² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67887431512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1179664 + ... + 1235872.

It is an arithmetic number, because the mean of its divisors is an integer number (4001589900).

Almost surely, 2^67887431512 is an apocalyptic number.

It is an amenable number.

67887431512 is a deficient number, since it is larger than the sum of its proper divisors (60163445288).

67887431512 is a wasteful number, since it uses less digits than its factorization.

67887431512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57115 (or 57111 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 52.

The spelling of 67887431512 in words is "sixty-seven billion, eight hundred eighty-seven million, four hundred thirty-one thousand, five hundred twelve".