67538631193 has 16 divisors (see below), whose sum is σ = 76449533760. Its totient is φ = 59102366400.

The previous prime is 67538631131. The next prime is 67538631233. The reversal of 67538631193 is 39113683576.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-67538631193 is a prime.

It is a super-2 number, since 2×67538631193² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67538631193.

It is not an unprimeable number, because it can be changed into a prime (67538631103) 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, 214230 + ... + 425407.

It is an arithmetic number, because the mean of its divisors is an integer number (4778095860).

Almost surely, 2^67538631193 is an apocalyptic number.

It is an amenable number.

67538631193 is a deficient number, since it is larger than the sum of its proper divisors (8910902567).

67538631193 is a wasteful number, since it uses less digits than its factorization.

67538631193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640008.

The product of its digits is 2449440, while the sum is 52.

The spelling of 67538631193 in words is "sixty-seven billion, five hundred thirty-eight million, six hundred thirty-one thousand, one hundred ninety-three".