205215355331402 has 16 divisors (see below), whose sum is σ = 331502234515200. Its totient is φ = 94714634620272.

The previous prime is 205215355331369. The next prime is 205215355331429. The reversal of 205215355331402 is 204133553512502.

205215355331402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×205215355331402² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205215355331402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12365099 + ... + 23734497.

It is an arithmetic number, because the mean of its divisors is an integer number (20718889657200).

Almost surely, 2^{205215355331402} is an apocalyptic number.

205215355331402 is a deficient number, since it is larger than the sum of its proper divisors (126286879183798).

205215355331402 is a wasteful number, since it uses less digits than its factorization.

205215355331402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12063637.

The product of its (nonzero) digits is 540000, while the sum is 41.

The spelling of 205215355331402 in words is "two hundred five trillion, two hundred fifteen billion, three hundred fifty-five million, three hundred thirty-one thousand, four hundred two".