354401405647 has 2 divisors, whose sum is σ = 354401405648. Its totient is φ = 354401405646.

The previous prime is 354401405581. The next prime is 354401405671. The reversal of 354401405647 is 746504104453.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 354401405647 - 2¹⁵ = 354401372879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354401405147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177200702823 + 177200702824.

It is an arithmetic number, because the mean of its divisors is an integer number (177200702824).

Almost surely, 2^354401405647 is an apocalyptic number.

354401405647 is a deficient number, since it is larger than the sum of its proper divisors (1).

354401405647 is an equidigital number, since it uses as much as digits as its factorization.

354401405647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 43.

The spelling of 354401405647 in words is "three hundred fifty-four billion, four hundred one million, four hundred five thousand, six hundred forty-seven".