213694811280 has 160 divisors (see below), whose sum is σ = 755953699200. Its totient is φ = 55445119488.

The previous prime is 213694811261. The next prime is 213694811287. The reversal of 213694811280 is 82118496312.

213694811280 is a `hidden beast` number, since 2 + 1 + 369 + 4 + 8 + 1 + 1 + 280 = 666.

213694811280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (213694811287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1257010 + ... + 1416849.

It is an arithmetic number, because the mean of its divisors is an integer number (4724710620).

Almost surely, 2^213694811280 is an apocalyptic number.

213694811280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213694811280 is an abundant number, since it is smaller than the sum of its proper divisors (542258887920).

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

213694811280 is a wasteful number, since it uses less digits than its factorization.

213694811280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673918 (or 2673906 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 213694811280 in words is "two hundred thirteen billion, six hundred ninety-four million, eight hundred eleven thousand, two hundred eighty".