478054644451 has 2 divisors, whose sum is σ = 478054644452. Its totient is φ = 478054644450.

The previous prime is 478054644439. The next prime is 478054644481. The reversal of 478054644451 is 154446450874.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478054644451 is a prime.

It is not a weakly prime, because it can be changed into another prime (478054644481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239027322225 + 239027322226.

It is an arithmetic number, because the mean of its divisors is an integer number (239027322226).

Almost surely, 2^478054644451 is an apocalyptic number.

478054644451 is a deficient number, since it is larger than the sum of its proper divisors (1).

478054644451 is an equidigital number, since it uses as much as digits as its factorization.

478054644451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8601600, while the sum is 52.

The spelling of 478054644451 in words is "four hundred seventy-eight billion, fifty-four million, six hundred forty-four thousand, four hundred fifty-one".