215907490106 has 32 divisors (see below), whose sum is σ = 403798556160. Its totient is φ = 84114903600.

The previous prime is 215907490069. The next prime is 215907490133. The reversal of 215907490106 is 601094709512.

It is a super-3 number, since 3×215907490106³ (a number of 35 digits) contains 333 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, 3755405 + ... + 3812463.

It is an arithmetic number, because the mean of its divisors is an integer number (12618704880).

Almost surely, 2^215907490106 is an apocalyptic number.

215907490106 is a deficient number, since it is larger than the sum of its proper divisors (187891066054).

215907490106 is a wasteful number, since it uses less digits than its factorization.

215907490106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81650.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 215907490106 in words is "two hundred fifteen billion, nine hundred seven million, four hundred ninety thousand, one hundred six".