78915728228038 has 16 divisors (see below), whose sum is σ = 127479417223536. Its totient is φ = 36422596959840.

The previous prime is 78915728228003. The next prime is 78915728228039. The reversal of 78915728228038 is 83082282751987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78915728228039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26459953 + ... + 29290963.

It is an arithmetic number, because the mean of its divisors is an integer number (7967463576471).

Almost surely, 2^{78915728228038} is an apocalyptic number.

78915728228038 is a deficient number, since it is larger than the sum of its proper divisors (48563688995498).

78915728228038 is a wasteful number, since it uses less digits than its factorization.

78915728228038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3903159.

The product of its (nonzero) digits is 216760320, while the sum is 70.

The spelling of 78915728228038 in words is "seventy-eight trillion, nine hundred fifteen billion, seven hundred twenty-eight million, two hundred twenty-eight thousand, thirty-eight".