138249956662 has 4 divisors (see below), whose sum is σ = 207374934996. Its totient is φ = 69124978330.

The previous prime is 138249956659. The next prime is 138249956687. The reversal of 138249956662 is 266659942831.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×138249956662² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138249956662.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34562489164 + ... + 34562489167.

It is an arithmetic number, because the mean of its divisors is an integer number (51843733749).

Almost surely, 2^138249956662 is an apocalyptic number.

138249956662 is a deficient number, since it is larger than the sum of its proper divisors (69124978334).

138249956662 is an equidigital number, since it uses as much as digits as its factorization.

138249956662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69124978333.

The product of its digits is 33592320, while the sum is 61.

The spelling of 138249956662 in words is "one hundred thirty-eight billion, two hundred forty-nine million, nine hundred fifty-six thousand, six hundred sixty-two".