216157514646 has 32 divisors (see below), whose sum is σ = 434145277440. Its totient is φ = 71747740064.

The previous prime is 216157514621. The next prime is 216157514647. The reversal of 216157514646 is 646415751612.

It is a super-2 number, since 2×216157514646² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216157514595 and 216157514604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216157514647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3199411 + ... + 3266273.

It is an arithmetic number, because the mean of its divisors is an integer number (13567039920).

Almost surely, 2^216157514646 is an apocalyptic number.

216157514646 is an abundant number, since it is smaller than the sum of its proper divisors (217987762794).

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

216157514646 is a wasteful number, since it uses less digits than its factorization.

216157514646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69140.

The product of its digits is 1209600, while the sum is 48.

The spelling of 216157514646 in words is "two hundred sixteen billion, one hundred fifty-seven million, five hundred fourteen thousand, six hundred forty-six".