139490156077 has 8 divisors (see below), whose sum is σ = 139902900120. Its totient is φ = 139077798720.

The previous prime is 139490156027. The next prime is 139490156081. The reversal of 139490156077 is 770651094931.

It can be written as a sum of positive squares in 4 ways, for example, as 3664001961 + 135826154116 = 60531^2 + 368546^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139490156077 - 2¹¹ = 139490154029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139490156017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 633999 + ... + 825187.

It is an arithmetic number, because the mean of its divisors is an integer number (17487862515).

Almost surely, 2^139490156077 is an apocalyptic number.

It is an amenable number.

139490156077 is a deficient number, since it is larger than the sum of its proper divisors (412744043).

139490156077 is a wasteful number, since it uses less digits than its factorization.

139490156077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193343.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The spelling of 139490156077 in words is "one hundred thirty-nine billion, four hundred ninety million, one hundred fifty-six thousand, seventy-seven".