491622559104 has 64 divisors (see below), whose sum is σ = 1341166310640. Its totient is φ = 159445149696.

The previous prime is 491622559069. The next prime is 491622559133. The reversal of 491622559104 is 401955226194.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 17286699 + ... + 17315114.

Almost surely, 2^491622559104 is an apocalyptic number.

It is an amenable number.

491622559104 is an abundant number, since it is smaller than the sum of its proper divisors (849543751536).

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

491622559104 is a wasteful number, since it uses less digits than its factorization.

491622559104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34601867 (or 34601855 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 491622559104 in words is "four hundred ninety-one billion, six hundred twenty-two million, five hundred fifty-nine thousand, one hundred four".