215154869270 has 32 divisors (see below), whose sum is σ = 422570856960. Its totient is φ = 78222406240.

The previous prime is 215154869231. The next prime is 215154869327. The reversal of 215154869270 is 72968451512.

It is a congruent number.

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, 360209 + ... + 748371.

It is an arithmetic number, because the mean of its divisors is an integer number (13205339280).

Almost surely, 2^215154869270 is an apocalyptic number.

215154869270 is a deficient number, since it is larger than the sum of its proper divisors (207415987690).

215154869270 is a wasteful number, since it uses less digits than its factorization.

215154869270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393220.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 215154869270 in words is "two hundred fifteen billion, one hundred fifty-four million, eight hundred sixty-nine thousand, two hundred seventy".