75075578955 has 72 divisors (see below), whose sum is σ = 141757263648. Its totient is φ = 36738344448.

The previous prime is 75075578953. The next prime is 75075579031. The reversal of 75075578955 is 55987557057.

75075578955 is a `hidden beast` number, since 7 + 5 + 0 + 7 + 5 + 578 + 9 + 55 = 666.

It is not a de Polignac number, because 75075578955 - 2¹ = 75075578953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75075578892 and 75075578901.

It is not an unprimeable number, because it can be changed into a prime (75075578953) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1240479 + ... + 1299591.

It is an arithmetic number, because the mean of its divisors is an integer number (1968850884).

Almost surely, 2^75075578955 is an apocalyptic number.

75075578955 is a deficient number, since it is larger than the sum of its proper divisors (66681684693).

75075578955 is a wasteful number, since it uses less digits than its factorization.

75075578955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59317 (or 59301 counting only the distinct ones).

The product of its (nonzero) digits is 77175000, while the sum is 63.

The spelling of 75075578955 in words is "seventy-five billion, seventy-five million, five hundred seventy-eight thousand, nine hundred fifty-five".