1215286165090 has 8 divisors (see below), whose sum is σ = 2187515097180. Its totient is φ = 486114466032.

The previous prime is 1215286165061. The next prime is 1215286165097. The reversal of 1215286165090 is 905616825121.

It can be written as a sum of positive squares in 2 ways, for example, as 1206985679641 + 8300485449 = 1098629^2 + 91107^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1215286165090.

It is not an unprimeable number, because it can be changed into a prime (1215286165097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60764308245 + ... + 60764308264.

Almost surely, 2^{1215286165090} is an apocalyptic number.

1215286165090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215286165090 is a deficient number, since it is larger than the sum of its proper divisors (972228932090).

1215286165090 is a wasteful number, since it uses less digits than its factorization.

1215286165090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121528616516.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 1215286165090 in words is "one trillion, two hundred fifteen billion, two hundred eighty-six million, one hundred sixty-five thousand, ninety".