211413401520 has 80 divisors (see below), whose sum is σ = 655426844640. Its totient is φ = 56373010432.

The previous prime is 211413401477. The next prime is 211413401533. The reversal of 211413401520 is 25104314112.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5661952 + ... + 5699168.

It is an arithmetic number, because the mean of its divisors is an integer number (8192835558).

Almost surely, 2^211413401520 is an apocalyptic number.

211413401520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211413401520 is an abundant number, since it is smaller than the sum of its proper divisors (444013443120).

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

211413401520 is a wasteful number, since it uses less digits than its factorization.

211413401520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60902 (or 60896 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 211413401520 its reverse (25104314112), we get a palindrome (236517715632).

The spelling of 211413401520 in words is "two hundred eleven billion, four hundred thirteen million, four hundred one thousand, five hundred twenty".