491729646045 has 32 divisors (see below), whose sum is σ = 858403713024. Its totient is φ = 238383272000.

The previous prime is 491729646029. The next prime is 491729646137. The reversal of 491729646045 is 540646927194.

It is not a de Polignac number, because 491729646045 - 2⁴ = 491729646029 is a prime.

It is a super-3 number, since 3×491729646045³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1100320 + ... + 1481270.

It is an arithmetic number, because the mean of its divisors is an integer number (26825116032).

Almost surely, 2^491729646045 is an apocalyptic number.

It is an amenable number.

491729646045 is a deficient number, since it is larger than the sum of its proper divisors (366674066979).

491729646045 is a wasteful number, since it uses less digits than its factorization.

491729646045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388793.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 491729646045 in words is "four hundred ninety-one billion, seven hundred twenty-nine million, six hundred forty-six thousand, forty-five".