78038431934 has 16 divisors (see below), whose sum is σ = 118127697408. Its totient is φ = 38663305632.

The previous prime is 78038431931. The next prime is 78038431957. The reversal of 78038431934 is 43913483087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78038431931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9692 + ... + 395184.

It is an arithmetic number, because the mean of its divisors is an integer number (7382981088).

Almost surely, 2^78038431934 is an apocalyptic number.

78038431934 is a deficient number, since it is larger than the sum of its proper divisors (40089265474).

78038431934 is a wasteful number, since it uses less digits than its factorization.

78038431934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386419.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 78038431934 in words is "seventy-eight billion, thirty-eight million, four hundred thirty-one thousand, nine hundred thirty-four".