212766661092 has 24 divisors (see below), whose sum is σ = 507018427776. Its totient is φ = 69413236768.

The previous prime is 212766661087. The next prime is 212766661097. The reversal of 212766661092 is 290166667212.

It is an interprime number because it is at equal distance from previous prime (212766661087) and next prime (212766661097).

It is not an unprimeable number, because it can be changed into a prime (212766661097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188622363 + ... + 188623490.

It is an arithmetic number, because the mean of its divisors is an integer number (21125767824).

Almost surely, 2^212766661092 is an apocalyptic number.

It is an amenable number.

212766661092 is an abundant number, since it is smaller than the sum of its proper divisors (294251766684).

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

212766661092 is a wasteful number, since it uses less digits than its factorization.

212766661092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377245907 (or 377245905 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 212766661092 in words is "two hundred twelve billion, seven hundred sixty-six million, six hundred sixty-one thousand, ninety-two".