78125140077 has 16 divisors (see below), whose sum is σ = 104733954048. Its totient is φ = 51799990320.

The previous prime is 78125140057. The next prime is 78125140099. The reversal of 78125140077 is 77004152187.

It is not a de Polignac number, because 78125140077 - 2¹⁶ = 78125074541 is a prime.

It is a super-2 number, since 2×78125140077² (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 (78125140057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3520338 + ... + 3542460.

It is an arithmetic number, because the mean of its divisors is an integer number (6545872128).

Almost surely, 2^78125140077 is an apocalyptic number.

It is an amenable number.

78125140077 is a deficient number, since it is larger than the sum of its proper divisors (26608813971).

78125140077 is a wasteful number, since it uses less digits than its factorization.

78125140077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28480.

The product of its (nonzero) digits is 109760, while the sum is 42.

The spelling of 78125140077 in words is "seventy-eight billion, one hundred twenty-five million, one hundred forty thousand, seventy-seven".