78288306535930 has 8 divisors (see below), whose sum is σ = 140918951764692. Its totient is φ = 31315322614368.

The previous prime is 78288306535877. The next prime is 78288306535949. The reversal of 78288306535930 is 3953560388287.

It can be written as a sum of positive squares in 2 ways, for example, as 68937633631161 + 9350672904769 = 8302869^2 + 3057887^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78288306535930² (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, 3914415326787 + ... + 3914415326806.

Almost surely, 2^{78288306535930} is an apocalyptic number.

78288306535930 is a deficient number, since it is larger than the sum of its proper divisors (62630645228762).

78288306535930 is a wasteful number, since it uses less digits than its factorization.

78288306535930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7828830653600.

The product of its (nonzero) digits is 261273600, while the sum is 67.

The spelling of 78288306535930 in words is "seventy-eight trillion, two hundred eighty-eight billion, three hundred six million, five hundred thirty-five thousand, nine hundred thirty".