215823754377480 has 128 divisors (see below), whose sum is σ = 648179623630080. Its totient is φ = 57490044149760.

The previous prime is 215823754377467. The next prime is 215823754377481. The reversal of 215823754377480 is 84773457328512.

It is not an unprimeable number, because it can be changed into a prime (215823754377481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1902865732 + ... + 1902979148.

It is an arithmetic number, because the mean of its divisors is an integer number (5063903309610).

Almost surely, 2^{215823754377480} is an apocalyptic number.

215823754377480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215823754377480 is an abundant number, since it is smaller than the sum of its proper divisors (432355869252600).

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

215823754377480 is a wasteful number, since it uses less digits than its factorization.

215823754377480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130639 (or 130635 counting only the distinct ones).

The product of its (nonzero) digits is 316108800, while the sum is 66.

The spelling of 215823754377480 in words is "two hundred fifteen trillion, eight hundred twenty-three billion, seven hundred fifty-four million, three hundred seventy-seven thousand, four hundred eighty".