61452078840208 has 40 divisors (see below), whose sum is σ = 138303156374720. Its totient is φ = 25904857587840.

The previous prime is 61452078840203. The next prime is 61452078840211. The reversal of 61452078840208 is 80204887025416.

It is not an unprimeable number, because it can be changed into a prime (61452078840203) 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, 4497364278 + ... + 4497377941.

It is an arithmetic number, because the mean of its divisors is an integer number (3457578909368).

Almost surely, 2^{61452078840208} is an apocalyptic number.

It is an amenable number.

61452078840208 is an abundant number, since it is smaller than the sum of its proper divisors (76851077534512).

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

61452078840208 is a wasteful number, since it uses less digits than its factorization.

61452078840208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8994742295 (or 8994742289 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 55.

The spelling of 61452078840208 in words is "sixty-one trillion, four hundred fifty-two billion, seventy-eight million, eight hundred forty thousand, two hundred eight".