7152741640521 has 9 divisors (see below), whose sum is σ = 10331749514541. Its totient is φ = 4768489078092.

The previous prime is 7152741640493. The next prime is 7152741640523. The reversal of 7152741640521 is 1250461472517.

The square root of 7152741640521 is 2674461.

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

7152741640521 is a `hidden beast` number, since 7 + 1 + 5 + 2 + 74 + 16 + 40 + 521 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 7152741640521 - 2²³ = 7152733251913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7152741640523) 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, 7577640 + ... + 8469126.

Almost surely, 2^{7152741640521} is an apocalyptic number.

7152741640521 is the 2674461-st square number.

7152741640521 is the 1337231-st centered octagonal number.

It is an amenable number.

7152741640521 is a deficient number, since it is larger than the sum of its proper divisors (3179007874020).

7152741640521 is an frugal number, since it uses more digits than its factorization.

7152741640521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782980 (or 891490 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 7152741640521 in words is "seven trillion, one hundred fifty-two billion, seven hundred forty-one million, six hundred forty thousand, five hundred twenty-one".