215049151865 has 32 divisors (see below), whose sum is σ = 273207416832. Its totient is φ = 162234432000.

The previous prime is 215049151859. The next prime is 215049151873. The reversal of 215049151865 is 568151940512.

It is not a de Polignac number, because 215049151865 - 2⁸ = 215049151609 is a prime.

It is a super-2 number, since 2×215049151865² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5400980 + ... + 5440650.

It is an arithmetic number, because the mean of its divisors is an integer number (8537731776).

Almost surely, 2^215049151865 is an apocalyptic number.

It is an amenable number.

215049151865 is a deficient number, since it is larger than the sum of its proper divisors (58158264967).

215049151865 is a wasteful number, since it uses less digits than its factorization.

215049151865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40601.

The product of its (nonzero) digits is 432000, while the sum is 47.

The spelling of 215049151865 in words is "two hundred fifteen billion, forty-nine million, one hundred fifty-one thousand, eight hundred sixty-five".