634155054120145 has 4 divisors (see below), whose sum is σ = 760986064944180. Its totient is φ = 507324043296112.

The previous prime is 634155054120097. The next prime is 634155054120229. The reversal of 634155054120145 is 541021450551436.

634155054120145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 191695987266624 + 442459066853521 = 13845432^2 + 21034711^2 .

It is a cyclic number.

It is not a de Polignac number, because 634155054120145 - 2⁹ = 634155054119633 is a prime.

It is a super-2 number, since 2×634155054120145² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 634155054120095 and 634155054120104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63415505412010 + ... + 63415505412019.

It is an arithmetic number, because the mean of its divisors is an integer number (190246516236045).

Almost surely, 2^{634155054120145} is an apocalyptic number.

It is an amenable number.

634155054120145 is a deficient number, since it is larger than the sum of its proper divisors (126831010824035).

634155054120145 is a wasteful number, since it uses less digits than its factorization.

634155054120145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126831010824034.

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 634155054120145 in words is "six hundred thirty-four trillion, one hundred fifty-five billion, fifty-four million, one hundred twenty thousand, one hundred forty-five".