215204610061 has 32 divisors (see below), whose sum is σ = 250842240000. Its totient is φ = 180824555520.

The previous prime is 215204610031. The next prime is 215204610119. The reversal of 215204610061 is 160016402512.

It is not a de Polignac number, because 215204610061 - 2¹⁷ = 215204478989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215204610011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78283315 + ... + 78286063.

It is an arithmetic number, because the mean of its divisors is an integer number (7838820000).

Almost surely, 2^215204610061 is an apocalyptic number.

It is an amenable number.

215204610061 is a deficient number, since it is larger than the sum of its proper divisors (35637629939).

215204610061 is a wasteful number, since it uses less digits than its factorization.

215204610061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 215204610061 in words is "two hundred fifteen billion, two hundred four million, six hundred ten thousand, sixty-one".