51242342636231 has 8 divisors (see below), whose sum is σ = 51263519804160. Its totient is φ = 51221166280632.

The previous prime is 51242342636203. The next prime is 51242342636237. The reversal of 51242342636231 is 13263624324215.

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

It is a cyclic number.

It is not a de Polignac number, because 51242342636231 - 2¹⁴ = 51242342619847 is a prime.

It is a super-2 number, since 2×51242342636231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51242342636237) 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, 148244480 + ... + 148589738.

It is an arithmetic number, because the mean of its divisors is an integer number (6407939975520).

Almost surely, 2^{51242342636231} is an apocalyptic number.

51242342636231 is a deficient number, since it is larger than the sum of its proper divisors (21177167929).

51242342636231 is a wasteful number, since it uses less digits than its factorization.

51242342636231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406165.

The product of its digits is 1244160, while the sum is 44.

The spelling of 51242342636231 in words is "fifty-one trillion, two hundred forty-two billion, three hundred forty-two million, six hundred thirty-six thousand, two hundred thirty-one".