51779188454 has 16 divisors (see below), whose sum is σ = 88808686848. Its totient is φ = 22179989832.

The previous prime is 51779188451. The next prime is 51779188457. The reversal of 51779188454 is 45488197715.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51779188451) and next prime (51779188457).

It is a junction number, because it is equal to n+sod(n) for n = 51779188393 and 51779188402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51779188451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895202 + ... + 951285.

It is an arithmetic number, because the mean of its divisors is an integer number (5550542928).

Almost surely, 2^51779188454 is an apocalyptic number.

51779188454 is a deficient number, since it is larger than the sum of its proper divisors (37029498394).

51779188454 is a wasteful number, since it uses less digits than its factorization.

51779188454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848499.

The product of its digits is 11289600, while the sum is 59.

The spelling of 51779188454 in words is "fifty-one billion, seven hundred seventy-nine million, one hundred eighty-eight thousand, four hundred fifty-four".