5405957691 has 8 divisors (see below), whose sum is σ = 7587309120. Its totient is φ = 3414289032.

The previous prime is 5405957681. The next prime is 5405957737. The reversal of 5405957691 is 1967595045.

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

It is not a de Polignac number, because 5405957691 - 2⁷ = 5405957563 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (5405957611) 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, 47420625 + ... + 47420738.

It is an arithmetic number, because the mean of its divisors is an integer number (948413640).

Almost surely, 2^5405957691 is an apocalyptic number.

5405957691 is a deficient number, since it is larger than the sum of its proper divisors (2181351429).

5405957691 is a wasteful number, since it uses less digits than its factorization.

5405957691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94841385.

The product of its (nonzero) digits is 1701000, while the sum is 51.

The square root of 5405957691 is about 73525.2180615603. The cubic root of 5405957691 is about 1755.0556055790.

The spelling of 5405957691 in words is "five billion, four hundred five million, nine hundred fifty-seven thousand, six hundred ninety-one".