354447671887 has 2 divisors, whose sum is σ = 354447671888. Its totient is φ = 354447671886.

The previous prime is 354447671863. The next prime is 354447671923. The reversal of 354447671887 is 788176744453.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354447671887 is a prime.

It is a super-2 number, since 2×354447671887² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354447671087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177223835943 + 177223835944.

It is an arithmetic number, because the mean of its divisors is an integer number (177223835944).

Almost surely, 2^354447671887 is an apocalyptic number.

354447671887 is a deficient number, since it is larger than the sum of its proper divisors (1).

354447671887 is an equidigital number, since it uses as much as digits as its factorization.

354447671887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126443520, while the sum is 64.

The spelling of 354447671887 in words is "three hundred fifty-four billion, four hundred forty-seven million, six hundred seventy-one thousand, eight hundred eighty-seven".