51342240496 has 20 divisors (see below), whose sum is σ = 104711149000. Its totient is φ = 24320008512.

The previous prime is 51342240491. The next prime is 51342240497. The reversal of 51342240496 is 69404224315.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51342240491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84444171 + ... + 84444778.

It is an arithmetic number, because the mean of its divisors is an integer number (5235557450).

Almost surely, 2^51342240496 is an apocalyptic number.

It is an amenable number.

51342240496 is an abundant number, since it is smaller than the sum of its proper divisors (53368908504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51342240496 is a wasteful number, since it uses less digits than its factorization.

51342240496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168888976 (or 168888970 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 51342240496 in words is "fifty-one billion, three hundred forty-two million, two hundred forty thousand, four hundred ninety-six".