147900505491 has 12 divisors (see below), whose sum is σ = 213689216832. Its totient is φ = 98574881616.

The previous prime is 147900505469. The next prime is 147900505507. The reversal of 147900505491 is 194505009741.

147900505491 is a `hidden beast` number, since 14 + 7 + 90 + 0 + 5 + 0 + 549 + 1 = 666.

It is not a de Polignac number, because 147900505491 - 2⁹ = 147900504979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (147900505091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2084451 + ... + 2154236.

It is an arithmetic number, because the mean of its divisors is an integer number (17807434736).

Almost surely, 2^147900505491 is an apocalyptic number.

147900505491 is a deficient number, since it is larger than the sum of its proper divisors (65788711341).

147900505491 is a wasteful number, since it uses less digits than its factorization.

147900505491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4242570 (or 4242567 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 147900505491 in words is "one hundred forty-seven billion, nine hundred million, five hundred five thousand, four hundred ninety-one".