216774392471662 has 16 divisors (see below), whose sum is σ = 325859375761920. Its totient is φ = 108154602702328.

The previous prime is 216774392471653. The next prime is 216774392471671. The reversal of 216774392471662 is 266174293477612.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (216774392471653) and next prime (216774392471671).

It is a super-2 number, since 2×216774392471662² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278903139 + ... + 279679297.

It is an arithmetic number, because the mean of its divisors is an integer number (20366210985120).

Almost surely, 2^{216774392471662} is an apocalyptic number.

216774392471662 is a deficient number, since it is larger than the sum of its proper divisors (109084983290258).

216774392471662 is a wasteful number, since it uses less digits than its factorization.

216774392471662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075655.

The product of its digits is 256048128, while the sum is 67.

The spelling of 216774392471662 in words is "two hundred sixteen trillion, seven hundred seventy-four billion, three hundred ninety-two million, four hundred seventy-one thousand, six hundred sixty-two".