101155651267721 has 8 divisors (see below), whose sum is σ = 108088607400840. Its totient is φ = 94331875546368.

The previous prime is 101155651267703. The next prime is 101155651267807. The reversal of 101155651267721 is 127762156551101.

It can be written as a sum of positive squares in 4 ways, for example, as 11420101044496 + 89735550223225 = 3379364^2 + 9472885^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101155651267721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101155651267721.

It is not an unprimeable number, because it can be changed into a prime (101155651267421) 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, 27295101026 + ... + 27295104731.

It is an arithmetic number, because the mean of its divisors is an integer number (13511075925105).

Almost surely, 2^{101155651267721} is an apocalyptic number.

It is an amenable number.

101155651267721 is a deficient number, since it is larger than the sum of its proper divisors (6932956133119).

101155651267721 is a wasteful number, since it uses less digits than its factorization.

101155651267721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54590205883.

The product of its (nonzero) digits is 882000, while the sum is 50.

The spelling of 101155651267721 in words is "one hundred one trillion, one hundred fifty-five billion, six hundred fifty-one million, two hundred sixty-seven thousand, seven hundred twenty-one".