139051166669 has 4 divisors (see below), whose sum is σ = 139052023740. Its totient is φ = 139050309600.

The previous prime is 139051166633. The next prime is 139051166687. The reversal of 139051166669 is 966661150931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8838444169 + 130212722500 = 94013^2 + 360850^2 .

It is a cyclic number.

It is not a de Polignac number, because 139051166669 - 2²⁰ = 139050118093 is a prime.

It is a super-2 number, since 2×139051166669² (a number of 23 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 139051166669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139051169669) 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, 102482 + ... + 537219.

It is an arithmetic number, because the mean of its divisors is an integer number (34763005935).

Almost surely, 2^139051166669 is an apocalyptic number.

It is an amenable number.

139051166669 is a deficient number, since it is larger than the sum of its proper divisors (857071).

139051166669 is an equidigital number, since it uses as much as digits as its factorization.

139051166669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857070.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The spelling of 139051166669 in words is "one hundred thirty-nine billion, fifty-one million, one hundred sixty-six thousand, six hundred sixty-nine".