7942552641 has 27 divisors (see below), whose sum is σ = 11687733603. Its totient is φ = 5197536720.

The previous prime is 7942552633. The next prime is 7942552693. The reversal of 7942552641 is 1462552497.

The square root of 7942552641 is 89121.

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

7942552641 is a `hidden beast` number, since 7 + 94 + 2 + 552 + 6 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 258277041 + 7684275600 = 16071^2 + 87660^2 .

It is not a de Polignac number, because 7942552641 - 2³ = 7942552633 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7942552621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 16308900 + ... + 16309386.

Almost surely, 2^7942552641 is an apocalyptic number.

7942552641 is the 89121-st square number.

7942552641 is the 44561-st centered octagonal number.

It is an amenable number.

7942552641 is a deficient number, since it is larger than the sum of its proper divisors (3745180962).

7942552641 is an frugal number, since it uses more digits than its factorization.

7942552641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102 (or 551 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The cubic root of 7942552641 is about 1995.2012151242.

The spelling of 7942552641 in words is "seven billion, nine hundred forty-two million, five hundred fifty-two thousand, six hundred forty-one".