77145012175 has 24 divisors (see below), whose sum is σ = 119264188032. Its totient is φ = 48090396000.

The previous prime is 77145012137. The next prime is 77145012239. The reversal of 77145012175 is 57121054177.

It is not a de Polignac number, because 77145012175 - 2⁹ = 77145011663 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20035741 + ... + 20039590.

It is an arithmetic number, because the mean of its divisors is an integer number (4969341168).

Almost surely, 2^77145012175 is an apocalyptic number.

77145012175 is a deficient number, since it is larger than the sum of its proper divisors (42119175857).

77145012175 is a wasteful number, since it uses less digits than its factorization.

77145012175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40075359 (or 40075354 counting only the distinct ones).

The product of its (nonzero) digits is 68600, while the sum is 40.

The spelling of 77145012175 in words is "seventy-seven billion, one hundred forty-five million, twelve thousand, one hundred seventy-five".