212293961955 has 48 divisors (see below), whose sum is σ = 396225704160. Its totient is φ = 104757064704.

The previous prime is 212293961953. The next prime is 212293961983. The reversal of 212293961955 is 559169392212.

212293961955 is a `hidden beast` number, since 2 + 12 + 2 + 9 + 3 + 9 + 619 + 5 + 5 = 666.

It is not a de Polignac number, because 212293961955 - 2¹ = 212293961953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212293961953) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2306632 + ... + 2396901.

It is an arithmetic number, because the mean of its divisors is an integer number (8254702170).

Almost surely, 2^212293961955 is an apocalyptic number.

212293961955 is a deficient number, since it is larger than the sum of its proper divisors (183931742205).

212293961955 is a wasteful number, since it uses less digits than its factorization.

212293961955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703620 (or 4703617 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 54.

The spelling of 212293961955 in words is "two hundred twelve billion, two hundred ninety-three million, nine hundred sixty-one thousand, nine hundred fifty-five".