216533325021461 has 8 divisors (see below), whose sum is σ = 247466774178624. Its totient is φ = 185599905117120.

The previous prime is 216533325021407. The next prime is 216533325021463. The reversal of 216533325021461 is 164120523335612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216533325021461 - 2⁶ = 216533325021397 is a prime.

It is a super-2 number, since 2×216533325021461² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216533325021463) 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, 11921006 + ... + 23982848.

It is an arithmetic number, because the mean of its divisors is an integer number (30933346772328).

Almost surely, 2^{216533325021461} is an apocalyptic number.

It is an amenable number.

216533325021461 is a deficient number, since it is larger than the sum of its proper divisors (30933449157163).

216533325021461 is a wasteful number, since it uses less digits than its factorization.

216533325021461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14626411.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 216533325021461 in words is "two hundred sixteen trillion, five hundred thirty-three billion, three hundred twenty-five million, twenty-one thousand, four hundred sixty-one".