447789078540 has 72 divisors (see below), whose sum is σ = 1368208164960. Its totient is φ = 118538805504.

The previous prime is 447789078509. The next prime is 447789078551. The reversal of 447789078540 is 45870987744.

447789078540 is a `hidden beast` number, since 4 + 4 + 7 + 7 + 89 + 0 + 7 + 8 + 540 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9054600 + ... + 9103919.

It is an arithmetic number, because the mean of its divisors is an integer number (19002891180).

Almost surely, 2^447789078540 is an apocalyptic number.

It is an amenable number.

447789078540 is an abundant number, since it is smaller than the sum of its proper divisors (920419086420).

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

447789078540 is a wasteful number, since it uses less digits than its factorization.

447789078540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18158671 (or 18158666 counting only the distinct ones).

The product of its (nonzero) digits is 63221760, while the sum is 63.

The spelling of 447789078540 in words is "four hundred forty-seven billion, seven hundred eighty-nine million, seventy-eight thousand, five hundred forty".