215161644061234 has 32 divisors (see below), whose sum is σ = 347657701471920. Its totient is φ = 99279979471872.

The previous prime is 215161644061123. The next prime is 215161644061241. The reversal of 215161644061234 is 432160446161512.

It can be written as a sum of positive squares in 8 ways, for example, as 20439016028209 + 194722628033025 = 4520953^2 + 13954305^2 .

It is a super-2 number, since 2×215161644061234² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2078222382 + ... + 2078325910.

Almost surely, 2^{215161644061234} is an apocalyptic number.

215161644061234 is a deficient number, since it is larger than the sum of its proper divisors (132496057410686).

215161644061234 is a wasteful number, since it uses less digits than its factorization.

215161644061234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123214.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 215161644061234 in words is "two hundred fifteen trillion, one hundred sixty-one billion, six hundred forty-four million, sixty-one thousand, two hundred thirty-four".