216514123473508 has 18 divisors (see below), whose sum is σ = 440760894214326. Its totient is φ = 92791767202848.

The previous prime is 216514123473377. The next prime is 216514123473517. The reversal of 216514123473508 is 805374321415612.

216514123473508 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 173116701093924 + 43397422379584 = 13157382^2 + 6587672^2 .

It is a super-3 number, since 3×216514123473508³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 552331947441 + ... + 552331947832.

Almost surely, 2^{216514123473508} is an apocalyptic number.

216514123473508 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

216514123473508 is an abundant number, since it is smaller than the sum of its proper divisors (224246770740818).

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

216514123473508 is a wasteful number, since it uses less digits than its factorization.

216514123473508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104663895291 (or 1104663895282 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 216514123473508 in words is "two hundred sixteen trillion, five hundred fourteen billion, one hundred twenty-three million, four hundred seventy-three thousand, five hundred eight".