78145548357152 has 24 divisors (see below), whose sum is σ = 156371163878412. Its totient is φ = 38432236896000.

The previous prime is 78145548357137. The next prime is 78145548357209. The reversal of 78145548357152 is 25175384554187.

It can be written as a sum of positive squares in 2 ways, for example, as 47564250195856 + 30581298161296 = 6896684^2 + 5530036^2 .

It is a super-2 number, since 2×78145548357152² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20016788099 + ... + 20016792002.

Almost surely, 2^{78145548357152} is an apocalyptic number.

It is an amenable number.

78145548357152 is an abundant number, since it is smaller than the sum of its proper divisors (78225615521260).

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

78145548357152 is a wasteful number, since it uses less digits than its factorization.

78145548357152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40033580172 (or 40033580164 counting only the distinct ones).

The product of its digits is 188160000, while the sum is 65.

The spelling of 78145548357152 in words is "seventy-eight trillion, one hundred forty-five billion, five hundred forty-eight million, three hundred fifty-seven thousand, one hundred fifty-two".