7543720975 has 12 divisors (see below), whose sum is σ = 10690530544. Its totient is φ = 5172837120.

The previous prime is 7543720963. The next prime is 7543720979. The reversal of 7543720975 is 5790273457.

It is not a de Polignac number, because 7543720975 - 2⁹ = 7543720463 is a prime.

It is a super-2 number, since 2×7543720975² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7543720979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21553314 + ... + 21553663.

Almost surely, 2^7543720975 is an apocalyptic number.

7543720975 is a deficient number, since it is larger than the sum of its proper divisors (3146809569).

7543720975 is a wasteful number, since it uses less digits than its factorization.

7543720975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43106994 (or 43106989 counting only the distinct ones).

The product of its (nonzero) digits is 1852200, while the sum is 49.

The square root of 7543720975 is about 86854.5967407598. The cubic root of 7543720975 is about 1961.2300496814.

The spelling of 7543720975 in words is "seven billion, five hundred forty-three million, seven hundred twenty thousand, nine hundred seventy-five".