101561258671 has 8 divisors (see below), whose sum is σ = 104313795440. Its totient is φ = 98809123968.

The previous prime is 101561258641. The next prime is 101561258681. The reversal of 101561258671 is 176852165101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101561258671 - 2²¹ = 101559161519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101561258641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452140 + ... + 638398.

It is an arithmetic number, because the mean of its divisors is an integer number (13039224430).

Almost surely, 2^101561258671 is an apocalyptic number.

101561258671 is a deficient number, since it is larger than the sum of its proper divisors (2752536769).

101561258671 is a wasteful number, since it uses less digits than its factorization.

101561258671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201033.

The product of its (nonzero) digits is 100800, while the sum is 43.

The spelling of 101561258671 in words is "one hundred one billion, five hundred sixty-one million, two hundred fifty-eight thousand, six hundred seventy-one".