634992540279 has 8 divisors (see below), whose sum is σ = 846682784640. Its totient is φ = 423315328056.

The previous prime is 634992540251. The next prime is 634992540283. The reversal of 634992540279 is 972045299436.

634992540279 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 634992540279 - 2¹¹ = 634992538231 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634992540179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3143769 + ... + 3339650.

It is an arithmetic number, because the mean of its divisors is an integer number (105835348080).

Almost surely, 2^634992540279 is an apocalyptic number.

634992540279 is a deficient number, since it is larger than the sum of its proper divisors (211690244361).

634992540279 is a wasteful number, since it uses less digits than its factorization.

634992540279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6516069.

The product of its (nonzero) digits is 29393280, while the sum is 60.

The spelling of 634992540279 in words is "six hundred thirty-four billion, nine hundred ninety-two million, five hundred forty thousand, two hundred seventy-nine".