215671147652701 has 16 divisors (see below), whose sum is σ = 233197905472000. Its totient is φ = 198279527928768.

The previous prime is 215671147652687. The next prime is 215671147652767. The reversal of 215671147652701 is 107256741176512.

It is not a de Polignac number, because 215671147652701 - 2³¹ = 215669000169053 is a prime.

It is a super-2 number, since 2×215671147652701² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215671147652771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23772141 + ... + 31566706.

It is an arithmetic number, because the mean of its divisors is an integer number (14574869092000).

Almost surely, 2^{215671147652701} is an apocalyptic number.

It is an amenable number.

215671147652701 is a deficient number, since it is larger than the sum of its proper divisors (17526757819299).

215671147652701 is a wasteful number, since it uses less digits than its factorization.

215671147652701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55340068.

The product of its (nonzero) digits is 4939200, while the sum is 55.

The spelling of 215671147652701 in words is "two hundred fifteen trillion, six hundred seventy-one billion, one hundred forty-seven million, six hundred fifty-two thousand, seven hundred one".