54813399457 has 2 divisors, whose sum is σ = 54813399458. Its totient is φ = 54813399456.

The previous prime is 54813399439. The next prime is 54813399499. The reversal of 54813399457 is 75499331845.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38897306176 + 15916093281 = 197224^2 + 126159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54813399457 is a prime.

It is not a weakly prime, because it can be changed into another prime (54813499457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27406699728 + 27406699729.

It is an arithmetic number, because the mean of its divisors is an integer number (27406699729).

Almost surely, 2^54813399457 is an apocalyptic number.

It is an amenable number.

54813399457 is a deficient number, since it is larger than the sum of its proper divisors (1).

54813399457 is an equidigital number, since it uses as much as digits as its factorization.

54813399457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16329600, while the sum is 58.

The spelling of 54813399457 in words is "fifty-four billion, eight hundred thirteen million, three hundred ninety-nine thousand, four hundred fifty-seven".