491690729762 has 16 divisors (see below), whose sum is σ = 754745191200. Its totient is φ = 240109864512.

The previous prime is 491690729737. The next prime is 491690729767. The reversal of 491690729762 is 267927096194.

It is a super-2 number, since 2×491690729762² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 491690729695 and 491690729704.

It is not an unprimeable number, because it can be changed into a prime (491690729767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 964373 + ... + 1383255.

It is an arithmetic number, because the mean of its divisors is an integer number (47171574450).

Almost surely, 2^491690729762 is an apocalyptic number.

491690729762 is a deficient number, since it is larger than the sum of its proper divisors (263054461438).

491690729762 is a wasteful number, since it uses less digits than its factorization.

491690729762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432577.

The product of its (nonzero) digits is 20575296, while the sum is 62.

The spelling of 491690729762 in words is "four hundred ninety-one billion, six hundred ninety million, seven hundred twenty-nine thousand, seven hundred sixty-two".