634774078852 has 6 divisors (see below), whose sum is σ = 1110854637998. Its totient is φ = 317387039424.

The previous prime is 634774078801. The next prime is 634774078867. The reversal of 634774078852 is 258870477436.

It can be written as a sum of positive squares in only one way, i.e., 625165374276 + 9608704576 = 790674^2 + 98024^2 .

It is a super-2 number, since 2×634774078852² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79346759853 + ... + 79346759860.

Almost surely, 2^634774078852 is an apocalyptic number.

It is an amenable number.

634774078852 is a deficient number, since it is larger than the sum of its proper divisors (476080559146).

634774078852 is a wasteful number, since it uses less digits than its factorization.

634774078852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158693519717 (or 158693519715 counting only the distinct ones).

The product of its (nonzero) digits is 63221760, while the sum is 61.

The spelling of 634774078852 in words is "six hundred thirty-four billion, seven hundred seventy-four million, seventy-eight thousand, eight hundred fifty-two".