78901606739 has 4 divisors (see below), whose sum is σ = 79018846056. Its totient is φ = 78784367424.

The previous prime is 78901606681. The next prime is 78901606757. The reversal of 78901606739 is 93760610987.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78901606739 - 2¹² = 78901602643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78901606759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58618649 + ... + 58619994.

It is an arithmetic number, because the mean of its divisors is an integer number (19754711514).

Almost surely, 2^78901606739 is an apocalyptic number.

78901606739 is a deficient number, since it is larger than the sum of its proper divisors (117239317).

78901606739 is a wasteful number, since it uses less digits than its factorization.

78901606739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117239316.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The spelling of 78901606739 in words is "seventy-eight billion, nine hundred one million, six hundred six thousand, seven hundred thirty-nine".