7478132261 has 8 divisors (see below), whose sum is σ = 7919031744. Its totient is φ = 7037344960.

The previous prime is 7478132251. The next prime is 7478132293. The reversal of 7478132261 is 1622318747.

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 7478132261 - 2¹⁴ = 7478115877 is a prime.

It is a super-2 number, since 2×7478132261² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7478132231) 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, 137006 + ... + 183648.

It is an arithmetic number, because the mean of its divisors is an integer number (989878968).

Almost surely, 2^7478132261 is an apocalyptic number.

It is an amenable number.

7478132261 is a deficient number, since it is larger than the sum of its proper divisors (440899483).

7478132261 is a wasteful number, since it uses less digits than its factorization.

7478132261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56091.

The product of its digits is 112896, while the sum is 41.

The square root of 7478132261 is about 86476.1947648022. The cubic root of 7478132261 is about 1955.5295396405.

The spelling of 7478132261 in words is "seven billion, four hundred seventy-eight million, one hundred thirty-two thousand, two hundred sixty-one".