106006666491 has 32 divisors (see below), whose sum is σ = 175502557440. Its totient is φ = 62679470400.

The previous prime is 106006666487. The next prime is 106006666501. The reversal of 106006666491 is 194666600601.

It is not a de Polignac number, because 106006666491 - 2² = 106006666487 is a prime.

It is a super-2 number, since 2×106006666491² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (106006666411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4340565 + ... + 4364918.

It is an arithmetic number, because the mean of its divisors is an integer number (5484454920).

Almost surely, 2^106006666491 is an apocalyptic number.

106006666491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

106006666491 is a deficient number, since it is larger than the sum of its proper divisors (69495890949).

106006666491 is a wasteful number, since it uses less digits than its factorization.

106006666491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8705544 (or 8705538 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 106006666491 in words is "one hundred six billion, six million, six hundred sixty-six thousand, four hundred ninety-one".