7661100516691 has 8 divisors (see below), whose sum is σ = 7824366088704. Its totient is φ = 7497845921160.

The previous prime is 7661100516649. The next prime is 7661100516697. The reversal of 7661100516691 is 1966150011667.

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 7661100516691 - 2¹⁵ = 7661100483923 is a prime.

It is a super-2 number, since 2×7661100516691² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7661100516697) 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, 1325605 + ... + 4132726.

It is an arithmetic number, because the mean of its divisors is an integer number (978045761088).

Almost surely, 2^{7661100516691} is an apocalyptic number.

7661100516691 is a deficient number, since it is larger than the sum of its proper divisors (163265572013).

7661100516691 is a wasteful number, since it uses less digits than its factorization.

7661100516691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5488241.

The product of its (nonzero) digits is 408240, while the sum is 49.

The spelling of 7661100516691 in words is "seven trillion, six hundred sixty-one billion, one hundred million, five hundred sixteen thousand, six hundred ninety-one".