634348195401 has 4 divisors (see below), whose sum is σ = 845797593872. Its totient is φ = 422898796932.

The previous prime is 634348195391. The next prime is 634348195541. The reversal of 634348195401 is 104591843436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 634348195401 - 2⁹ = 634348194889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634348190401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105724699231 + ... + 105724699236.

It is an arithmetic number, because the mean of its divisors is an integer number (211449398468).

Almost surely, 2^634348195401 is an apocalyptic number.

It is an amenable number.

634348195401 is a deficient number, since it is larger than the sum of its proper divisors (211449398471).

634348195401 is a wasteful number, since it uses less digits than its factorization.

634348195401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211449398470.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 634348195401 in words is "six hundred thirty-four billion, three hundred forty-eight million, one hundred ninety-five thousand, four hundred one".