213546041655123 has 64 divisors (see below), whose sum is σ = 292677126543360. Its totient is φ = 138456449860608.

The previous prime is 213546041655101. The next prime is 213546041655143. The reversal of 213546041655123 is 321556140645312.

It is a happy number.

It is not a de Polignac number, because 213546041655123 - 2⁹ = 213546041654611 is a prime.

It is a super-3 number, since 3×213546041655123³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (213546041655143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12117453690 + ... + 12117471312.

It is an arithmetic number, because the mean of its divisors is an integer number (4573080102240).

Almost surely, 2^{213546041655123} is an apocalyptic number.

213546041655123 is a deficient number, since it is larger than the sum of its proper divisors (79131084888237).

213546041655123 is a wasteful number, since it uses less digits than its factorization.

213546041655123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20068.

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 213546041655123 in words is "two hundred thirteen trillion, five hundred forty-six billion, forty-one million, six hundred fifty-five thousand, one hundred twenty-three".