212391719553 has 12 divisors (see below), whose sum is σ = 306648400560. Its totient is φ = 130702596336.

The previous prime is 212391719539. The next prime is 212391719587. The reversal of 212391719553 is 355917193212.

It is not a de Polignac number, because 212391719553 - 2⁶ = 212391719489 is a prime.

It is a super-5 number, since 5×212391719553⁵ (a number of 58 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (212391719653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209458783 + ... + 209459796.

It is an arithmetic number, because the mean of its divisors is an integer number (25554033380).

Almost surely, 2^212391719553 is an apocalyptic number.

It is an amenable number.

212391719553 is a deficient number, since it is larger than the sum of its proper divisors (94256681007).

212391719553 is a wasteful number, since it uses less digits than its factorization.

212391719553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418918608 (or 418918595 counting only the distinct ones).

The product of its digits is 510300, while the sum is 48.

The spelling of 212391719553 in words is "two hundred twelve billion, three hundred ninety-one million, seven hundred nineteen thousand, five hundred fifty-three".