78038488031 has 4 divisors (see below), whose sum is σ = 89186843472. Its totient is φ = 66890132592.

The previous prime is 78038488027. The next prime is 78038488081. The reversal of 78038488031 is 13088483087.

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 78038488031 - 2² = 78038488027 is a prime.

It is a super-2 number, since 2×78038488031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78038488081) 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, 5574177710 + ... + 5574177723.

It is an arithmetic number, because the mean of its divisors is an integer number (22296710868).

Almost surely, 2^78038488031 is an apocalyptic number.

78038488031 is a deficient number, since it is larger than the sum of its proper divisors (11148355441).

78038488031 is a wasteful number, since it uses less digits than its factorization.

78038488031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11148355440.

The product of its (nonzero) digits is 1032192, while the sum is 50.

The spelling of 78038488031 in words is "seventy-eight billion, thirty-eight million, four hundred eighty-eight thousand, thirty-one".