7427758641 has 8 divisors (see below), whose sum is σ = 9926552160. Its totient is φ = 4940402112.

The previous prime is 7427758579. The next prime is 7427758669. The reversal of 7427758641 is 1468577247.

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

It is not a de Polignac number, because 7427758641 - 2¹⁷ = 7427627569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7427758841) 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, 2857731 + ... + 2860328.

It is an arithmetic number, because the mean of its divisors is an integer number (1240819020).

Almost surely, 2^7427758641 is an apocalyptic number.

It is an amenable number.

7427758641 is a deficient number, since it is larger than the sum of its proper divisors (2498793519).

7427758641 is a wasteful number, since it uses less digits than its factorization.

7427758641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5718495.

The product of its digits is 2634240, while the sum is 51.

The square root of 7427758641 is about 86184.4454701659. The cubic root of 7427758641 is about 1951.1287474248.

The spelling of 7427758641 in words is "seven billion, four hundred twenty-seven million, seven hundred fifty-eight thousand, six hundred forty-one".