212734576761 has 16 divisors (see below), whose sum is σ = 343235620224. Its totient is φ = 114411873024.

The previous prime is 212734576757. The next prime is 212734576801. The reversal of 212734576761 is 167675437212.

It is not a de Polignac number, because 212734576761 - 2² = 212734576757 is a prime.

It is a super-2 number, since 2×212734576761² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212734576721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297947230 + ... + 297947943.

It is an arithmetic number, because the mean of its divisors is an integer number (21452226264).

Almost surely, 2^212734576761 is an apocalyptic number.

212734576761 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212734576761 is a deficient number, since it is larger than the sum of its proper divisors (130501043463).

212734576761 is a wasteful number, since it uses less digits than its factorization.

212734576761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595895200.

The product of its digits is 2963520, while the sum is 51.

The spelling of 212734576761 in words is "two hundred twelve billion, seven hundred thirty-four million, five hundred seventy-six thousand, seven hundred sixty-one".