78112415390 has 32 divisors (see below), whose sum is σ = 141101873856. Its totient is φ = 31134090240.

The previous prime is 78112415363. The next prime is 78112415393. The reversal of 78112415390 is 9351421187.

It is a super-2 number, since 2×78112415390² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78112415393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5439620 + ... + 5453960.

It is an arithmetic number, because the mean of its divisors is an integer number (4409433558).

Almost surely, 2^78112415390 is an apocalyptic number.

78112415390 is a deficient number, since it is larger than the sum of its proper divisors (62989458466).

78112415390 is a wasteful number, since it uses less digits than its factorization.

78112415390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16244.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 78112415390 in words is "seventy-eight billion, one hundred twelve million, four hundred fifteen thousand, three hundred ninety".