491051786015 has 8 divisors (see below), whose sum is σ = 673442449440. Its totient is φ = 336721224672.

The previous prime is 491051785981. The next prime is 491051786023. The reversal of 491051786015 is 510687150194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 491051786015 - 2⁶ = 491051785951 is a prime.

It is a super-2 number, since 2×491051786015² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7015025480 + ... + 7015025549.

It is an arithmetic number, because the mean of its divisors is an integer number (84180306180).

Almost surely, 2^491051786015 is an apocalyptic number.

491051786015 is a deficient number, since it is larger than the sum of its proper divisors (182390663425).

491051786015 is a wasteful number, since it uses less digits than its factorization.

491051786015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14030051041.

The product of its (nonzero) digits is 302400, while the sum is 47.

The spelling of 491051786015 in words is "four hundred ninety-one billion, fifty-one million, seven hundred eighty-six thousand, fifteen".