75151643044 has 27 divisors (see below), whose sum is σ = 132799007523. Its totient is φ = 37212588672.

The previous prime is 75151643041. The next prime is 75151643087. The reversal of 75151643044 is 44034615157.

The square root of 75151643044 is 274138.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 66957772644 + 8193870400 = 258762^2 + 90520^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75151642988 and 75151643006.

It is not an unprimeable number, because it can be changed into a prime (75151643041) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 61954582 + ... + 61955794.

Almost surely, 2^75151643044 is an apocalyptic number.

75151643044 is the 274138-th square number.

It is an amenable number.

75151643044 is a deficient number, since it is larger than the sum of its proper divisors (57647364479).

75151643044 is an equidigital number, since it uses as much as digits as its factorization.

75151643044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 75151643044 in words is "seventy-five billion, one hundred fifty-one million, six hundred forty-three thousand, forty-four".