78530545400880 has 80 divisors (see below), whose sum is σ = 246526269166080. Its totient is φ = 20676396758784.

The previous prime is 78530545400863. The next prime is 78530545400911. The reversal of 78530545400880 is 8800454503587.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 78530545400880.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2070934242 + ... + 2070972161.

It is an arithmetic number, because the mean of its divisors is an integer number (3081578364576).

Almost surely, 2^{78530545400880} is an apocalyptic number.

It is an amenable number.

78530545400880 is an abundant number, since it is smaller than the sum of its proper divisors (167995723765200).

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

78530545400880 is a wasteful number, since it uses less digits than its factorization.

78530545400880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141906498 (or 4141906492 counting only the distinct ones).

The product of its (nonzero) digits is 21504000, while the sum is 57.

The spelling of 78530545400880 in words is "seventy-eight trillion, five hundred thirty billion, five hundred forty-five million, four hundred thousand, eight hundred eighty".