67731111252387 has 48 divisors (see below), whose sum is σ = 112420621048320. Its totient is φ = 38862522273600.

The previous prime is 67731111252359. The next prime is 67731111252443. The reversal of 67731111252387 is 78325211113776.

It is a happy number.

67731111252387 is a `hidden beast` number, since 6 + 7 + 7 + 3 + 1 + 1 + 1 + 1 + 252 + 387 = 666.

It is not a de Polignac number, because 67731111252387 - 2¹⁵ = 67731111219619 is a prime.

It is a super-2 number, since 2×67731111252387² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (67731111252317) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9310564 + ... + 14904657.

It is an arithmetic number, because the mean of its divisors is an integer number (2342096271840).

Almost surely, 2^{67731111252387} is an apocalyptic number.

67731111252387 is a deficient number, since it is larger than the sum of its proper divisors (44689509795933).

67731111252387 is a wasteful number, since it uses less digits than its factorization.

67731111252387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24216744 (or 24216741 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The spelling of 67731111252387 in words is "sixty-seven trillion, seven hundred thirty-one billion, one hundred eleven million, two hundred fifty-two thousand, three hundred eighty-seven".