634746753480 has 128 divisors (see below), whose sum is σ = 2177359361280. Its totient is φ = 145012654080.

The previous prime is 634746753461. The next prime is 634746753539. The reversal of 634746753480 is 84357647436.

634746753480 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 super-2 number, since 2×634746753480² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 634746753480.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1506960 + ... + 1881600.

It is an arithmetic number, because the mean of its divisors is an integer number (17010620010).

Almost surely, 2^634746753480 is an apocalyptic number.

634746753480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634746753480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088679680640).

634746753480 is an abundant number, since it is smaller than the sum of its proper divisors (1542612607800).

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

634746753480 is a wasteful number, since it uses less digits than its factorization.

634746753480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376679 (or 376675 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 57.

The spelling of 634746753480 in words is "six hundred thirty-four billion, seven hundred forty-six million, seven hundred fifty-three thousand, four hundred eighty".