634339719042 has 32 divisors (see below), whose sum is σ = 1310723395584. Its totient is φ = 204450901200.

The previous prime is 634339719037. The next prime is 634339719043. The reversal of 634339719042 is 240917933436.

It is not an unprimeable number, because it can be changed into a prime (634339719043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1238398 + ... + 1674009.

It is an arithmetic number, because the mean of its divisors is an integer number (40960106112).

Almost surely, 2^634339719042 is an apocalyptic number.

634339719042 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

634339719042 is an abundant number, since it is smaller than the sum of its proper divisors (676383676542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634339719042 is a wasteful number, since it uses less digits than its factorization.

634339719042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913614.

The product of its (nonzero) digits is 2939328, while the sum is 51.

The spelling of 634339719042 in words is "six hundred thirty-four billion, three hundred thirty-nine million, seven hundred nineteen thousand, forty-two".