51265403297 has 4 divisors (see below), whose sum is σ = 52919126016. Its totient is φ = 49611680580.

The previous prime is 51265403281. The next prime is 51265403353. The reversal of 51265403297 is 79230456215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51265403297 - 2⁴ = 51265403281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51265403207) 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, 826861313 + ... + 826861374.

It is an arithmetic number, because the mean of its divisors is an integer number (13229781504).

Almost surely, 2^51265403297 is an apocalyptic number.

It is an amenable number.

51265403297 is a deficient number, since it is larger than the sum of its proper divisors (1653722719).

51265403297 is a wasteful number, since it uses less digits than its factorization.

51265403297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653722718.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 51265403297 in words is "fifty-one billion, two hundred sixty-five million, four hundred three thousand, two hundred ninety-seven".