7161438106491 has 8 divisors (see below), whose sum is σ = 9567343641360. Its totient is φ = 4764912321312.

The previous prime is 7161438106489. The next prime is 7161438106507. The reversal of 7161438106491 is 1946018341617.

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

It is not a de Polignac number, because 7161438106491 - 2¹ = 7161438106489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7161438106481) 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, 2344935640 + ... + 2344938693.

It is an arithmetic number, because the mean of its divisors is an integer number (1195917955170).

Almost surely, 2^{7161438106491} is an apocalyptic number.

7161438106491 is a deficient number, since it is larger than the sum of its proper divisors (2405905534869).

7161438106491 is a wasteful number, since it uses less digits than its factorization.

7161438106491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4689874845.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 7161438106491 in words is "seven trillion, one hundred sixty-one billion, four hundred thirty-eight million, one hundred six thousand, four hundred ninety-one".