139604126145621 has 8 divisors (see below), whose sum is σ = 194231827680960. Its totient is φ = 89022921020352.

The previous prime is 139604126145619. The next prime is 139604126145643. The reversal of 139604126145621 is 126541621406931.

139604126145621 = 3938469² + 3938470² + ... + 3938477².

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

It is not a de Polignac number, because 139604126145621 - 2¹ = 139604126145619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139604126147621) 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, 1011624102436 + ... + 1011624102573.

It is an arithmetic number, because the mean of its divisors is an integer number (24278978460120).

Almost surely, 2^{139604126145621} is an apocalyptic number.

It is an amenable number.

139604126145621 is a deficient number, since it is larger than the sum of its proper divisors (54627701535339).

139604126145621 is a wasteful number, since it uses less digits than its factorization.

139604126145621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023248205035.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 139604126145621 in words is "one hundred thirty-nine trillion, six hundred four billion, one hundred twenty-six million, one hundred forty-five thousand, six hundred twenty-one".