4378266520 has 32 divisors (see below), whose sum is σ = 10369580400. Its totient is φ = 1659132288.

The previous prime is 4378266509. The next prime is 4378266523. The reversal of 4378266520 is 256628734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4378266523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2879679 + ... + 2881198.

Almost surely, 2^4378266520 is an apocalyptic number.

4378266520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4378266520 is an abundant number, since it is smaller than the sum of its proper divisors (5991313880).

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

4378266520 is a wasteful number, since it uses less digits than its factorization.

4378266520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760907 (or 5760903 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 4378266520 is about 66168.4707394693. The cubic root of 4378266520 is about 1635.9401015845.

The spelling of 4378266520 in words is "four billion, three hundred seventy-eight million, two hundred sixty-six thousand, five hundred twenty".