639149001111 has 6 divisors (see below), whose sum is σ = 923215223840. Its totient is φ = 426099334068.

The previous prime is 639149001091. The next prime is 639149001277. The reversal of 639149001111 is 111100941936.

639149001111 is a `hidden beast` number, since 63 + 91 + 490 + 0 + 11 + 11 = 666.

It is not a de Polignac number, because 639149001111 - 2⁶ = 639149001047 is a prime.

It is a super-2 number, since 2×639149001111² (a number of 24 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 (639149001611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35508277831 + ... + 35508277848.

Almost surely, 2^639149001111 is an apocalyptic number.

639149001111 is a deficient number, since it is larger than the sum of its proper divisors (284066222729).

639149001111 is a wasteful number, since it uses less digits than its factorization.

639149001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71016555685 (or 71016555682 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The spelling of 639149001111 in words is "six hundred thirty-nine billion, one hundred forty-nine million, one thousand, one hundred eleven".