216401460020 has 48 divisors (see below), whose sum is σ = 455094127488. Its totient is φ = 86436685440.

The previous prime is 216401460017. The next prime is 216401460049. The reversal of 216401460020 is 20064104612.

It is a congruent number.

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, 59993057 + ... + 59996663.

It is an arithmetic number, because the mean of its divisors is an integer number (9481127656).

Almost surely, 2^216401460020 is an apocalyptic number.

216401460020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216401460020 is an abundant number, since it is smaller than the sum of its proper divisors (238692667468).

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

216401460020 is a wasteful number, since it uses less digits than its factorization.

216401460020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7080 (or 7078 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 216401460020 its reverse (20064104612), we get a palindrome (236465564632).

The spelling of 216401460020 in words is "two hundred sixteen billion, four hundred one million, four hundred sixty thousand, twenty".