7386981425661 has 16 divisors (see below), whose sum is σ = 9881200787328. Its totient is φ = 4908708888000.

The previous prime is 7386981425623. The next prime is 7386981425683. The reversal of 7386981425661 is 1665241896837.

It is not a de Polignac number, because 7386981425661 - 2⁶ = 7386981425597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7386981425592 and 7386981425601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7386981425861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78620811 + ... + 78714711.

It is an arithmetic number, because the mean of its divisors is an integer number (617575049208).

Almost surely, 2^{7386981425661} is an apocalyptic number.

It is an amenable number.

7386981425661 is a deficient number, since it is larger than the sum of its proper divisors (2494219361667).

7386981425661 is a wasteful number, since it uses less digits than its factorization.

7386981425661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178532.

The product of its digits is 104509440, while the sum is 66.

The spelling of 7386981425661 in words is "seven trillion, three hundred eighty-six billion, nine hundred eighty-one million, four hundred twenty-five thousand, six hundred sixty-one".