51343248480787 has 4 divisors (see below), whose sum is σ = 51465786067080. Its totient is φ = 51220710894496.

The previous prime is 51343248480757. The next prime is 51343248480847. The reversal of 51343248480787 is 78708484234315.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51343248480787 - 2³⁹ = 50793492666899 is a prime.

It is a super-2 number, since 2×51343248480787² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51343248480757) 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, 61268792518 + ... + 61268793355.

It is an arithmetic number, because the mean of its divisors is an integer number (12866446516770).

Almost surely, 2^{51343248480787} is an apocalyptic number.

51343248480787 is a deficient number, since it is larger than the sum of its proper divisors (122537586293).

51343248480787 is a wasteful number, since it uses less digits than its factorization.

51343248480787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122537586292.

The product of its (nonzero) digits is 144506880, while the sum is 64.

The spelling of 51343248480787 in words is "fifty-one trillion, three hundred forty-three billion, two hundred forty-eight million, four hundred eighty thousand, seven hundred eighty-seven".