213401554456 has 16 divisors (see below), whose sum is σ = 404012653200. Its totient is φ = 105664846944.

The previous prime is 213401554447. The next prime is 213401554517. The reversal of 213401554456 is 654455104312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129490411 + ... + 129492058.

It is an arithmetic number, because the mean of its divisors is an integer number (25250790825).

Almost surely, 2^213401554456 is an apocalyptic number.

It is an amenable number.

213401554456 is a deficient number, since it is larger than the sum of its proper divisors (190611098744).

213401554456 is a wasteful number, since it uses less digits than its factorization.

213401554456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258982578 (or 258982574 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 213401554456 its reverse (654455104312), we get a palindrome (867856658768).

The spelling of 213401554456 in words is "two hundred thirteen billion, four hundred one million, five hundred fifty-four thousand, four hundred fifty-six".