10380066119721 has 135 divisors (see below), whose sum is σ = 16637922863661. Its totient is φ = 6448312956816.

The previous prime is 10380066119693. The next prime is 10380066119723. The reversal of 10380066119721 is 12791166008301.

The square root of 10380066119721 is 3221811.

It is a perfect power (a square), and thus also a powerful number.

10380066119721 is a `hidden beast` number, since 1 + 0 + 3 + 8 + 0 + 0 + 6 + 611 + 9 + 7 + 21 = 666.

It is not a de Polignac number, because 10380066119721 - 2³³ = 10371476185129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10380066119723) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 45727163410 + ... + 45727163636.

Almost surely, 2^{10380066119721} is an apocalyptic number.

10380066119721 is the 3221811-st square number.

10380066119721 is the 1610906-th centered octagonal number.

It is an amenable number.

10380066119721 is a deficient number, since it is larger than the sum of its proper divisors (6257856743940).

10380066119721 is an frugal number, since it uses more digits than its factorization.

10380066119721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 10380066119721 in words is "ten trillion, three hundred eighty billion, sixty-six million, one hundred nineteen thousand, seven hundred twenty-one".