78941242390 has 32 divisors (see below), whose sum is σ = 153055236096. Its totient is φ = 29229293280.

The previous prime is 78941242361. The next prime is 78941242397. The reversal of 78941242390 is 9324214987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78941242397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5528722 + ... + 5542981.

It is an arithmetic number, because the mean of its divisors is an integer number (4782976128).

Almost surely, 2^78941242390 is an apocalyptic number.

78941242390 is a deficient number, since it is larger than the sum of its proper divisors (74113993706).

78941242390 is a wasteful number, since it uses less digits than its factorization.

78941242390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11071764.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 78941242390 in words is "seventy-eight billion, nine hundred forty-one million, two hundred forty-two thousand, three hundred ninety".