749172782106 has 32 divisors (see below), whose sum is σ = 1902661034880. Its totient is φ = 214049366208.

The previous prime is 749172782081. The next prime is 749172782107. The reversal of 749172782106 is 601287271947.

749172782106 is a `hidden beast` number, since 7 + 491 + 72 + 7 + 82 + 1 + 0 + 6 = 666.

It is a super-2 number, since 2×749172782106² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (749172782107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 990968911 + ... + 990969666.

It is an arithmetic number, because the mean of its divisors is an integer number (59458157340).

Almost surely, 2^749172782106 is an apocalyptic number.

749172782106 is an abundant number, since it is smaller than the sum of its proper divisors (1153488252774).

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

749172782106 is a wasteful number, since it uses less digits than its factorization.

749172782106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981938595 (or 1981938589 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The spelling of 749172782106 in words is "seven hundred forty-nine billion, one hundred seventy-two million, seven hundred eighty-two thousand, one hundred six".