4457978280405 has 48 divisors (see below), whose sum is σ = 8399331158400. Its totient is φ = 2174185782144.

The previous prime is 4457978280403. The next prime is 4457978280499. The reversal of 4457978280405 is 5040828797544.

It is a happy number.

4457978280405 is a `hidden beast` number, since 4 + 4 + 5 + 79 + 7 + 82 + 80 + 405 = 666.

It is not a de Polignac number, because 4457978280405 - 2¹ = 4457978280403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4457978280401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35547105 + ... + 35672294.

It is an arithmetic number, because the mean of its divisors is an integer number (174986065800).

Almost surely, 2^{4457978280405} is an apocalyptic number.

4457978280405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4457978280405 is a deficient number, since it is larger than the sum of its proper divisors (3941352877995).

4457978280405 is a wasteful number, since it uses less digits than its factorization.

4457978280405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71219530 (or 71219527 counting only the distinct ones).

The product of its (nonzero) digits is 90316800, while the sum is 63.

The spelling of 4457978280405 in words is "four trillion, four hundred fifty-seven billion, nine hundred seventy-eight million, two hundred eighty thousand, four hundred five".