7951261047 has 4 divisors (see below), whose sum is σ = 10601681400. Its totient is φ = 5300840696.

The previous prime is 7951261033. The next prime is 7951261051. The reversal of 7951261047 is 7401621597.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7951261047 - 2¹⁴ = 7951244663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7951261447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325210172 + ... + 1325210177.

It is an arithmetic number, because the mean of its divisors is an integer number (2650420350).

Almost surely, 2^7951261047 is an apocalyptic number.

7951261047 is a deficient number, since it is larger than the sum of its proper divisors (2650420353).

7951261047 is a wasteful number, since it uses less digits than its factorization.

7951261047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2650420352.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 7951261047 is about 89169.8438206550. The cubic root of 7951261047 is about 1995.9301443384.

The spelling of 7951261047 in words is "seven billion, nine hundred fifty-one million, two hundred sixty-one thousand, forty-seven".