78535478754140 has 48 divisors (see below), whose sum is σ = 165344835503232. Its totient is φ = 31334133321216.

The previous prime is 78535478754113. The next prime is 78535478754157. The reversal of 78535478754140 is 4145787453587.

It is a super-3 number, since 3×78535478754140³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

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, 308524397 + ... + 308778843.

It is an arithmetic number, because the mean of its divisors is an integer number (3444684072984).

Almost surely, 2^{78535478754140} is an apocalyptic number.

It is an amenable number.

78535478754140 is an abundant number, since it is smaller than the sum of its proper divisors (86809356749092).

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

78535478754140 is a wasteful number, since it uses less digits than its factorization.

78535478754140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293726 (or 293724 counting only the distinct ones).

The product of its (nonzero) digits is 526848000, while the sum is 68.

The spelling of 78535478754140 in words is "seventy-eight trillion, five hundred thirty-five billion, four hundred seventy-eight million, seven hundred fifty-four thousand, one hundred forty".