213154511900 has 72 divisors (see below), whose sum is σ = 534276960336. Its totient is φ = 72951270400.

The previous prime is 213154511887. The next prime is 213154511903. The reversal of 213154511900 is 9115451312.

213154511900 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213154511900² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213154511903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5680619 + ... + 5718018.

It is an arithmetic number, because the mean of its divisors is an integer number (7420513338).

Almost surely, 2^213154511900 is an apocalyptic number.

213154511900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213154511900 is an abundant number, since it is smaller than the sum of its proper divisors (321122448436).

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

213154511900 is a wasteful number, since it uses less digits than its factorization.

213154511900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11398679 (or 11398672 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 213154511900 in words is "two hundred thirteen billion, one hundred fifty-four million, five hundred eleven thousand, nine hundred".