78978240130 has 8 divisors (see below), whose sum is σ = 142160832252. Its totient is φ = 31591296048.

The previous prime is 78978240119. The next prime is 78978240163. The reversal of 78978240130 is 3104287987.

It can be written as a sum of positive squares in 2 ways, for example, as 63782007601 + 15196232529 = 252551^2 + 123273^2 .

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

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, 3948911997 + ... + 3948912016.

Almost surely, 2^78978240130 is an apocalyptic number.

78978240130 is a deficient number, since it is larger than the sum of its proper divisors (63182592122).

78978240130 is a wasteful number, since it uses less digits than its factorization.

78978240130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7897824020.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 78978240130 in words is "seventy-eight billion, nine hundred seventy-eight million, two hundred forty thousand, one hundred thirty".