67487720751 has 32 divisors (see below), whose sum is σ = 109109856000. Its totient is φ = 40887102240.

The previous prime is 67487720749. The next prime is 67487720801. The reversal of 67487720751 is 15702778476.

It is not a de Polignac number, because 67487720751 - 2¹ = 67487720749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67487720731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 827400 + ... + 905298.

It is an arithmetic number, because the mean of its divisors is an integer number (3409683000).

Almost surely, 2^67487720751 is an apocalyptic number.

67487720751 is a deficient number, since it is larger than the sum of its proper divisors (41622135249).

67487720751 is a wasteful number, since it uses less digits than its factorization.

67487720751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80836 (or 80830 counting only the distinct ones).

The product of its (nonzero) digits is 4609920, while the sum is 54.

The spelling of 67487720751 in words is "sixty-seven billion, four hundred eighty-seven million, seven hundred twenty thousand, seven hundred fifty-one".