215105963402 has 16 divisors (see below), whose sum is σ = 352761815232. Its totient is φ = 97561482720.

The previous prime is 215105963353. The next prime is 215105963407. The reversal of 215105963402 is 204369501512.

It is a super-2 number, since 2×215105963402² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215105963407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10687478 + ... + 10707585.

It is an arithmetic number, because the mean of its divisors is an integer number (22047613452).

Almost surely, 2^215105963402 is an apocalyptic number.

215105963402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

215105963402 is a deficient number, since it is larger than the sum of its proper divisors (137655851830).

215105963402 is a wasteful number, since it uses less digits than its factorization.

215105963402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21395533.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 215105963402 in words is "two hundred fifteen billion, one hundred five million, nine hundred sixty-three thousand, four hundred two".