75120561607 has 16 divisors (see below), whose sum is σ = 93076603200. Its totient is φ = 59037138432.

The previous prime is 75120561589. The next prime is 75120561641. The reversal of 75120561607 is 70616502157.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 75120561607 - 2³⁵ = 40760823239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75120561607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75120561647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2756578 + ... + 2783695.

It is an arithmetic number, because the mean of its divisors is an integer number (5817287700).

Almost surely, 2^75120561607 is an apocalyptic number.

75120561607 is a deficient number, since it is larger than the sum of its proper divisors (17956041593).

75120561607 is a wasteful number, since it uses less digits than its factorization.

75120561607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540442.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 75120561607 in words is "seventy-five billion, one hundred twenty million, five hundred sixty-one thousand, six hundred seven".