75561497022 has 96 divisors (see below), whose sum is σ = 173785554432. Its totient is φ = 21863248000.

The previous prime is 75561497021. The next prime is 75561497029. The reversal of 75561497022 is 22079416557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75561497021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1371997 + ... + 1426007.

It is an arithmetic number, because the mean of its divisors is an integer number (1810266192).

Almost surely, 2^75561497022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75561497022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86892777216).

75561497022 is an abundant number, since it is smaller than the sum of its proper divisors (98224057410).

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

75561497022 is a wasteful number, since it uses less digits than its factorization.

75561497022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54126 (or 54115 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 75561497022 in words is "seventy-five billion, five hundred sixty-one million, four hundred ninety-seven thousand, twenty-two".