447878218940 has 24 divisors (see below), whose sum is σ = 947310771120. Its totient is φ = 177862428288.

The previous prime is 447878218939. The next prime is 447878218951. The reversal of 447878218940 is 49812878744.

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, 80550857 + ... + 80556416.

It is an arithmetic number, because the mean of its divisors is an integer number (39471282130).

Almost surely, 2^447878218940 is an apocalyptic number.

It is an amenable number.

447878218940 is an abundant number, since it is smaller than the sum of its proper divisors (499432552180).

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

447878218940 is a wasteful number, since it uses less digits than its factorization.

447878218940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161107421 (or 161107419 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 62.

The spelling of 447878218940 in words is "four hundred forty-seven billion, eight hundred seventy-eight million, two hundred eighteen thousand, nine hundred forty".