216625834390 has 96 divisors (see below), whose sum is σ = 455396012352. Its totient is φ = 72674918400.

The previous prime is 216625834379. The next prime is 216625834391. The reversal of 216625834390 is 93438526612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216625834391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48340950 + ... + 48345430.

It is an arithmetic number, because the mean of its divisors is an integer number (4743708462).

Almost surely, 2^216625834390 is an apocalyptic number.

216625834390 is an abundant number, since it is smaller than the sum of its proper divisors (238770177962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216625834390 is a wasteful number, since it uses less digits than its factorization.

216625834390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4774 (or 4703 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 216625834390 in words is "two hundred sixteen billion, six hundred twenty-five million, eight hundred thirty-four thousand, three hundred ninety".