67903829381 has 4 divisors (see below), whose sum is σ = 67904463264. Its totient is φ = 67903195500.

The previous prime is 67903829311. The next prime is 67903829393. The reversal of 67903829381 is 18392830976.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67903829381 is a prime.

It is a super-2 number, since 2×67903829381² (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 (67903829311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112145 + ... + 385206.

It is an arithmetic number, because the mean of its divisors is an integer number (16976115816).

Almost surely, 2^67903829381 is an apocalyptic number.

It is an amenable number.

67903829381 is a deficient number, since it is larger than the sum of its proper divisors (633883).

67903829381 is a wasteful number, since it uses less digits than its factorization.

67903829381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633882.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 67903829381 in words is "sixty-seven billion, nine hundred three million, eight hundred twenty-nine thousand, three hundred eighty-one".