213778619044 has 27 divisors (see below), whose sum is σ = 376852705803. Its totient is φ = 106112079000.

The previous prime is 213778619029. The next prime is 213778619063. The reversal of 213778619044 is 440916877312.

It is a happy number.

The square root of 213778619044 is 462362.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213778618982 and 213778619000.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 139632559 + ... + 139634089.

Almost surely, 2^213778619044 is an apocalyptic number.

213778619044 is the 462362-nd square number.

It is an amenable number.

213778619044 is a deficient number, since it is larger than the sum of its proper divisors (163074086759).

213778619044 is an frugal number, since it uses more digits than its factorization.

213778619044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368 (or 1684 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 213778619044 in words is "two hundred thirteen billion, seven hundred seventy-eight million, six hundred nineteen thousand, forty-four".