216310400054 has 16 divisors (see below), whose sum is σ = 370879703808. Its totient is φ = 92688988392.

The previous prime is 216310400041. The next prime is 216310400057. The reversal of 216310400054 is 450004013612.

It is a junction number, because it is equal to n+sod(n) for n = 216310399996 and 216310400032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216310400057) 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, 1201964 + ... + 1370159.

It is an arithmetic number, because the mean of its divisors is an integer number (23179981488).

Almost surely, 2^216310400054 is an apocalyptic number.

216310400054 is a deficient number, since it is larger than the sum of its proper divisors (154569303754).

216310400054 is a wasteful number, since it uses less digits than its factorization.

216310400054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578139.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 216310400054 its reverse (450004013612), we get a palindrome (666314413666).

The spelling of 216310400054 in words is "two hundred sixteen billion, three hundred ten million, four hundred thousand, fifty-four".