67673788631 has 16 divisors (see below), whose sum is σ = 72516072960. Its totient is φ = 62962829280.

The previous prime is 67673788627. The next prime is 67673788639. The reversal of 67673788631 is 13688737676.

67673788631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 67673788631 - 2² = 67673788627 is a prime.

It is a super-2 number, since 2×67673788631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67673788639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704750 + ... + 794996.

It is an arithmetic number, because the mean of its divisors is an integer number (4532254560).

Almost surely, 2^67673788631 is an apocalyptic number.

67673788631 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

67673788631 is a deficient number, since it is larger than the sum of its proper divisors (4842284329).

67673788631 is a wasteful number, since it uses less digits than its factorization.

67673788631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90974.

The product of its digits is 42674688, while the sum is 62.

The spelling of 67673788631 in words is "sixty-seven billion, six hundred seventy-three million, seven hundred eighty-eight thousand, six hundred thirty-one".