75057921917020 has 24 divisors (see below), whose sum is σ = 180139012601184. Its totient is φ = 25734144657216.

The previous prime is 75057921916987. The next prime is 75057921917021. The reversal of 75057921917020 is 2071912975057.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75057921917021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268064006707 + ... + 268064006986.

It is an arithmetic number, because the mean of its divisors is an integer number (7505792191716).

Almost surely, 2^{75057921917020} is an apocalyptic number.

75057921917020 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

75057921917020 is an abundant number, since it is smaller than the sum of its proper divisors (105081090684164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75057921917020 is a wasteful number, since it uses less digits than its factorization.

75057921917020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536128013709 (or 536128013707 counting only the distinct ones).

The product of its (nonzero) digits is 2778300, while the sum is 55.

The spelling of 75057921917020 in words is "seventy-five trillion, fifty-seven billion, nine hundred twenty-one million, nine hundred seventeen thousand, twenty".