101513251065666 has 24 divisors (see below), whose sum is σ = 223161361848432. Its totient is φ = 30761591231800.

The previous prime is 101513251065647. The next prime is 101513251065773. The reversal of 101513251065666 is 666560152315101.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69912706620 + ... + 69912708071.

It is an arithmetic number, because the mean of its divisors is an integer number (9298390077018).

Almost surely, 2^{101513251065666} is an apocalyptic number.

101513251065666 is an abundant number, since it is smaller than the sum of its proper divisors (121648110782766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101513251065666 is a wasteful number, since it uses less digits than its factorization.

101513251065666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139825414718 (or 139825414707 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 101513251065666 in words is "one hundred one trillion, five hundred thirteen billion, two hundred fifty-one million, sixty-five thousand, six hundred sixty-six".