215152540123541 has 16 divisors (see below), whose sum is σ = 239800137609600. Its totient is φ = 191837484684288.

The previous prime is 215152540123513. The next prime is 215152540123603. The reversal of 215152540123541 is 145321045251512.

It is a cyclic number.

It is not a de Polignac number, because 215152540123541 - 2¹⁴ = 215152540107157 is a prime.

It is a super-2 number, since 2×215152540123541² (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 (215152540123141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46619000 + ... + 51025838.

It is an arithmetic number, because the mean of its divisors is an integer number (14987508600600).

Almost surely, 2^{215152540123541} is an apocalyptic number.

It is an amenable number.

215152540123541 is a deficient number, since it is larger than the sum of its proper divisors (24647597486059).

215152540123541 is a wasteful number, since it uses less digits than its factorization.

215152540123541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4558028.

The product of its (nonzero) digits is 240000, while the sum is 41.

The spelling of 215152540123541 in words is "two hundred fifteen trillion, one hundred fifty-two billion, five hundred forty million, one hundred twenty-three thousand, five hundred forty-one".