212305453231551 has 8 divisors (see below), whose sum is σ = 287714493997104. Its totient is φ = 139216690643520.

The previous prime is 212305453231489. The next prime is 212305453231577. The reversal of 212305453231551 is 155132354503212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212305453231551 - 2²² = 212305449037247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212305453231951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580069544166 + ... + 580069544531.

It is an arithmetic number, because the mean of its divisors is an integer number (35964311749638).

Almost surely, 2^{212305453231551} is an apocalyptic number.

212305453231551 is a deficient number, since it is larger than the sum of its proper divisors (75409040765553).

212305453231551 is a wasteful number, since it uses less digits than its factorization.

212305453231551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160139088761.

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 212305453231551 in words is "two hundred twelve trillion, three hundred five billion, four hundred fifty-three million, two hundred thirty-one thousand, five hundred fifty-one".