634424266314655 has 4 divisors (see below), whose sum is σ = 761309119577592. Its totient is φ = 507539413051720.

The previous prime is 634424266314617. The next prime is 634424266314701. The reversal of 634424266314655 is 556413662424436.

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

It is not a de Polignac number, because 634424266314655 - 2¹³ = 634424266306463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634424266314593 and 634424266314602.

It is a congruent number.

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, 63442426631461 + ... + 63442426631470.

It is an arithmetic number, because the mean of its divisors is an integer number (190327279894398).

Almost surely, 2^{634424266314655} is an apocalyptic number.

634424266314655 is a deficient number, since it is larger than the sum of its proper divisors (126884853262937).

634424266314655 is a wasteful number, since it uses less digits than its factorization.

634424266314655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126884853262936.

The product of its digits is 298598400, while the sum is 61.

The spelling of 634424266314655 in words is "six hundred thirty-four trillion, four hundred twenty-four billion, two hundred sixty-six million, three hundred fourteen thousand, six hundred fifty-five".