634545547240 has 32 divisors (see below), whose sum is σ = 1557520889760. Its totient is φ = 230743835200.

The previous prime is 634545547211. The next prime is 634545547247. The reversal of 634545547240 is 42745545436.

It is a super-2 number, since 2×634545547240² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (634545547247) 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, 721074046 + ... + 721074925.

It is an arithmetic number, because the mean of its divisors is an integer number (48672527805).

Almost surely, 2^634545547240 is an apocalyptic number.

It is an amenable number.

634545547240 is an abundant number, since it is smaller than the sum of its proper divisors (922975342520).

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

634545547240 is a wasteful number, since it uses less digits than its factorization.

634545547240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442148993 (or 1442148989 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 49.

The spelling of 634545547240 in words is "six hundred thirty-four billion, five hundred forty-five million, five hundred forty-seven thousand, two hundred forty".