78631581454130 has 16 divisors (see below), whose sum is σ = 141537334670424. Its totient is φ = 31452524125440.

The previous prime is 78631581454123. The next prime is 78631581454157. The reversal of 78631581454130 is 3145418513687.

It can be written as a sum of positive squares in 4 ways, for example, as 44783493050209 + 33848088403921 = 6692047^2 + 5817911^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10478711 + ... + 16342170.

Almost surely, 2^{78631581454130} is an apocalyptic number.

78631581454130 is a deficient number, since it is larger than the sum of its proper divisors (62905753216294).

78631581454130 is a wasteful number, since it uses less digits than its factorization.

78631581454130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27114061.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 78631581454130 in words is "seventy-eight trillion, six hundred thirty-one billion, five hundred eighty-one million, four hundred fifty-four thousand, one hundred thirty".