51354344479 has 2 divisors, whose sum is σ = 51354344480. Its totient is φ = 51354344478.

The previous prime is 51354344473. The next prime is 51354344527. The reversal of 51354344479 is 97444345315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51354344479 - 2¹⁵ = 51354311711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51354344473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25677172239 + 25677172240.

It is an arithmetic number, because the mean of its divisors is an integer number (25677172240).

Almost surely, 2^51354344479 is an apocalyptic number.

51354344479 is a deficient number, since it is larger than the sum of its proper divisors (1).

51354344479 is an equidigital number, since it uses as much as digits as its factorization.

51354344479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 49.

The spelling of 51354344479 in words is "fifty-one billion, three hundred fifty-four million, three hundred forty-four thousand, four hundred seventy-nine".