78085751008077 has 32 divisors (see below), whose sum is σ = 118840233960960. Its totient is φ = 50636965579200.

The previous prime is 78085751008063. The next prime is 78085751008091. The reversal of 78085751008077 is 77080015758087.

It is an interprime number because it is at equal distance from previous prime (78085751008063) and next prime (78085751008091).

It is not a de Polignac number, because 78085751008077 - 2⁴ = 78085751008061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78085751004077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6403674 + ... + 14042027.

It is an arithmetic number, because the mean of its divisors is an integer number (3713757311280).

Almost surely, 2^{78085751008077} is an apocalyptic number.

It is an amenable number.

78085751008077 is a deficient number, since it is larger than the sum of its proper divisors (40754482952883).

78085751008077 is a wasteful number, since it uses less digits than its factorization.

78085751008077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20449570 (or 20449564 counting only the distinct ones).

The product of its (nonzero) digits is 30732800, while the sum is 63.

The spelling of 78085751008077 in words is "seventy-eight trillion, eighty-five billion, seven hundred fifty-one million, eight thousand, seventy-seven".