7639948657801 has 4 divisors (see below), whose sum is σ = 7640053546900. Its totient is φ = 7639843768704.

The previous prime is 7639948657763. The next prime is 7639948657849. The reversal of 7639948657801 is 1087568499367.

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 4983716915776 + 2656231742025 = 2232424^2 + 1629795^2 .

It is a cyclic number.

It is not a de Polignac number, because 7639948657801 - 2¹¹ = 7639948655753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7639948657001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52335216 + ... + 52480993.

It is an arithmetic number, because the mean of its divisors is an integer number (1910013386725).

Almost surely, 2^{7639948657801} is an apocalyptic number.

It is an amenable number.

7639948657801 is a deficient number, since it is larger than the sum of its proper divisors (104889099).

7639948657801 is a wasteful number, since it uses less digits than its factorization.

7639948657801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104889098.

The product of its (nonzero) digits is 548674560, while the sum is 73.

The spelling of 7639948657801 in words is "seven trillion, six hundred thirty-nine billion, nine hundred forty-eight million, six hundred fifty-seven thousand, eight hundred one".