7850657003081 has 4 divisors (see below), whose sum is σ = 7900661187972. Its totient is φ = 7800652818192.

The previous prime is 7850657003053. The next prime is 7850657003087. The reversal of 7850657003081 is 1803007560587.

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 5568490855225 + 2282166147856 = 2359765^2 + 1510684^2 .

It is a cyclic number.

It is not a de Polignac number, because 7850657003081 - 2¹⁸ = 7850656740937 is a prime.

It is a super-2 number, since 2×7850657003081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7850657003087) 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, 25002092210 + ... + 25002092523.

It is an arithmetic number, because the mean of its divisors is an integer number (1975165296993).

Almost surely, 2^{7850657003081} is an apocalyptic number.

It is an amenable number.

7850657003081 is a deficient number, since it is larger than the sum of its proper divisors (50004184891).

7850657003081 is a wasteful number, since it uses less digits than its factorization.

7850657003081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50004184890.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 7850657003081 in words is "seven trillion, eight hundred fifty billion, six hundred fifty-seven million, three thousand, eighty-one".