54640321146457 has 2 divisors, whose sum is σ = 54640321146458. Its totient is φ = 54640321146456.

The previous prime is 54640321146443. The next prime is 54640321146533. The reversal of 54640321146457 is 75464112304645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54154601358361 + 485719788096 = 7358981^2 + 696936^2 .

It is a cyclic number.

It is not a de Polignac number, because 54640321146457 - 2⁷ = 54640321146329 is a prime.

It is not a weakly prime, because it can be changed into another prime (54640321146427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27320160573228 + 27320160573229.

It is an arithmetic number, because the mean of its divisors is an integer number (27320160573229).

Almost surely, 2^{54640321146457} is an apocalyptic number.

It is an amenable number.

54640321146457 is a deficient number, since it is larger than the sum of its proper divisors (1).

54640321146457 is an equidigital number, since it uses as much as digits as its factorization.

54640321146457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9676800, while the sum is 52.

The spelling of 54640321146457 in words is "fifty-four trillion, six hundred forty billion, three hundred twenty-one million, one hundred forty-six thousand, four hundred fifty-seven".