7639649280001 has 4 divisors (see below), whose sum is σ = 7903085462100. Its totient is φ = 7376213097904.

The previous prime is 7639649279959. The next prime is 7639649280019. The reversal of 7639649280001 is 1000829469367.

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 5674157438401 + 1965491841600 = 2382049^2 + 1401960^2 .

It is a cyclic number.

It is not a de Polignac number, because 7639649280001 - 2³³ = 7631059345409 is a prime.

It is a super-2 number, since 2×7639649280001² (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 (7639649280031) 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, 131718091006 + ... + 131718091063.

It is an arithmetic number, because the mean of its divisors is an integer number (1975771365525).

Almost surely, 2^{7639649280001} is an apocalyptic number.

It is an amenable number.

7639649280001 is a deficient number, since it is larger than the sum of its proper divisors (263436182099).

7639649280001 is a wasteful number, since it uses less digits than its factorization.

7639649280001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263436182098.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 7639649280001 in words is "seven trillion, six hundred thirty-nine billion, six hundred forty-nine million, two hundred eighty thousand, one".