7391754890521 has 8 divisors (see below), whose sum is σ = 7404630021824. Its totient is φ = 7378882421040.

The previous prime is 7391754890477. The next prime is 7391754890543. The reversal of 7391754890521 is 1250984571937.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7391754890521 - 2¹³ = 7391754882329 is a prime.

It is a super-2 number, since 2×7391754890521² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7391754890521.

It is not an unprimeable number, because it can be changed into a prime (7391754893521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4934266 + ... + 6255436.

It is an arithmetic number, because the mean of its divisors is an integer number (925578752728).

Almost surely, 2^{7391754890521} is an apocalyptic number.

It is an amenable number.

7391754890521 is a deficient number, since it is larger than the sum of its proper divisors (12875131303).

7391754890521 is a wasteful number, since it uses less digits than its factorization.

7391754890521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330911.

The product of its (nonzero) digits is 19051200, while the sum is 61.

The spelling of 7391754890521 in words is "seven trillion, three hundred ninety-one billion, seven hundred fifty-four million, eight hundred ninety thousand, five hundred twenty-one".