213279775776 has 36 divisors (see below), whose sum is σ = 606514363182. Its totient is φ = 71093258496.

The previous prime is 213279775769. The next prime is 213279775781. The reversal of 213279775776 is 677577972312.

213279775776 is a `hidden beast` number, since 21 + 32 + 7 + 9 + 7 + 7 + 577 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 174620351376 + 38659424400 = 417876^2 + 196620^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 370277101 + ... + 370277676.

Almost surely, 2^213279775776 is an apocalyptic number.

It is an amenable number.

213279775776 is an abundant number, since it is smaller than the sum of its proper divisors (393234587406).

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

213279775776 is a wasteful number, since it uses less digits than its factorization.

213279775776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740554793 (or 740554782 counting only the distinct ones).

The product of its digits is 54454680, while the sum is 63.

The spelling of 213279775776 in words is "two hundred thirteen billion, two hundred seventy-nine million, seven hundred seventy-five thousand, seven hundred seventy-six".