78439088001 has 4 divisors (see below), whose sum is σ = 104585450672. Its totient is φ = 52292725332.

The previous prime is 78439087997. The next prime is 78439088003. The reversal of 78439088001 is 10088093487.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10088093487 = 3 ⋅3362697829.

It is not a de Polignac number, because 78439088001 - 2² = 78439087997 is a prime.

It is a super-3 number, since 3×78439088001³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78439088003) 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, 13073181331 + ... + 13073181336.

It is an arithmetic number, because the mean of its divisors is an integer number (26146362668).

Almost surely, 2^78439088001 is an apocalyptic number.

It is an amenable number.

78439088001 is a deficient number, since it is larger than the sum of its proper divisors (26146362671).

78439088001 is a wasteful number, since it uses less digits than its factorization.

78439088001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26146362670.

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 78439088001 in words is "seventy-eight billion, four hundred thirty-nine million, eighty-eight thousand, one".