75155620975 has 12 divisors (see below), whose sum is σ = 93873214944. Its totient is φ = 59685629120.

The previous prime is 75155620949. The next prime is 75155620979. The reversal of 75155620975 is 57902655157.

It is a happy number.

It is not a de Polignac number, because 75155620975 - 2¹¹ = 75155618927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75155620979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10968199 + ... + 10975048.

It is an arithmetic number, because the mean of its divisors is an integer number (7822767912).

Almost surely, 2^75155620975 is an apocalyptic number.

75155620975 is a deficient number, since it is larger than the sum of its proper divisors (18717593969).

75155620975 is a wasteful number, since it uses less digits than its factorization.

75155620975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21943394 (or 21943389 counting only the distinct ones).

The product of its (nonzero) digits is 3307500, while the sum is 52.

The spelling of 75155620975 in words is "seventy-five billion, one hundred fifty-five million, six hundred twenty thousand, nine hundred seventy-five".