67287128628 has 48 divisors (see below), whose sum is σ = 161494260480. Its totient is φ = 21789339264.

The previous prime is 67287128611. The next prime is 67287128641. The reversal of 67287128628 is 82682178276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173893 + ... + 405971.

It is an arithmetic number, because the mean of its divisors is an integer number (3364463760).

Almost surely, 2^67287128628 is an apocalyptic number.

It is an amenable number.

67287128628 is an abundant number, since it is smaller than the sum of its proper divisors (94207131852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67287128628 is a wasteful number, since it uses less digits than its factorization.

67287128628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232776 (or 232774 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 57.

The spelling of 67287128628 in words is "sixty-seven billion, two hundred eighty-seven million, one hundred twenty-eight thousand, six hundred twenty-eight".