216729251374 has 8 divisors (see below), whose sum is σ = 331227723960. Its totient is φ = 106320010056.

The previous prime is 216729251371. The next prime is 216729251411. The reversal of 216729251374 is 473152927612.

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

It is a super-2 number, since 2×216729251374² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216729251371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1022307684 + ... + 1022307895.

It is an arithmetic number, because the mean of its divisors is an integer number (41403465495).

Almost surely, 2^216729251374 is an apocalyptic number.

216729251374 is a deficient number, since it is larger than the sum of its proper divisors (114498472586).

216729251374 is a wasteful number, since it uses less digits than its factorization.

216729251374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044615634.

The product of its digits is 1270080, while the sum is 49.

The spelling of 216729251374 in words is "two hundred sixteen billion, seven hundred twenty-nine million, two hundred fifty-one thousand, three hundred seventy-four".