7543879901 has 4 divisors (see below), whose sum is σ = 7704388032. Its totient is φ = 7383371772.

The previous prime is 7543879891. The next prime is 7543879907. The reversal of 7543879901 is 1099783457.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1099783457 = 61 ⋅18029237.

It is a cyclic number.

It is not a de Polignac number, because 7543879901 - 2¹⁴ = 7543863517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7543879907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80253995 + ... + 80254088.

It is an arithmetic number, because the mean of its divisors is an integer number (1926097008).

Almost surely, 2^7543879901 is an apocalyptic number.

It is an amenable number.

7543879901 is a deficient number, since it is larger than the sum of its proper divisors (160508131).

7543879901 is a wasteful number, since it uses less digits than its factorization.

7543879901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160508130.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The square root of 7543879901 is about 86855.5116328262. The cubic root of 7543879901 is about 1961.2438222064.

The spelling of 7543879901 in words is "seven billion, five hundred forty-three million, eight hundred seventy-nine thousand, nine hundred one".