634559350654 has 4 divisors (see below), whose sum is σ = 951839025984. Its totient is φ = 317279675326.

The previous prime is 634559350637. The next prime is 634559350699. The reversal of 634559350654 is 456053955436.

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

It is a super-2 number, since 2×634559350654² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 634559350595 and 634559350604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158639837662 + ... + 158639837665.

It is an arithmetic number, because the mean of its divisors is an integer number (237959756496).

Almost surely, 2^634559350654 is an apocalyptic number.

634559350654 is a deficient number, since it is larger than the sum of its proper divisors (317279675330).

634559350654 is a wasteful number, since it uses less digits than its factorization.

634559350654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317279675329.

The product of its (nonzero) digits is 29160000, while the sum is 55.

The spelling of 634559350654 in words is "six hundred thirty-four billion, five hundred fifty-nine million, three hundred fifty thousand, six hundred fifty-four".