1639075075157 has 4 divisors (see below), whose sum is σ = 1765157773260. Its totient is φ = 1512992377056.

The previous prime is 1639075075109. The next prime is 1639075075171. The reversal of 1639075075157 is 7515705709361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 956863501636 + 682211573521 = 978194^2 + 825961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1639075075157 - 2¹⁴ = 1639075058773 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 (1639015075157) 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, 63041349032 + ... + 63041349057.

It is an arithmetic number, because the mean of its divisors is an integer number (441289443315).

Almost surely, 2^{1639075075157} is an apocalyptic number.

It is an amenable number.

1639075075157 is a deficient number, since it is larger than the sum of its proper divisors (126082698103).

1639075075157 is a wasteful number, since it uses less digits than its factorization.

1639075075157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126082698102.

The product of its (nonzero) digits is 6945750, while the sum is 56.

The spelling of 1639075075157 in words is "one trillion, six hundred thirty-nine billion, seventy-five million, seventy-five thousand, one hundred fifty-seven".