7661450541667 has 4 divisors (see below), whose sum is σ = 8250792891040. Its totient is φ = 7072108192296.

The previous prime is 7661450541653. The next prime is 7661450541727.

It is a happy number.

7661450541667 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7661450541667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7661450541167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294671174667 + ... + 294671174692.

It is an arithmetic number, because the mean of its divisors is an integer number (2062698222760).

Almost surely, 2^{7661450541667} is an apocalyptic number.

7661450541667 is a deficient number, since it is larger than the sum of its proper divisors (589342349373).

7661450541667 is a wasteful number, since it uses less digits than its factorization.

7661450541667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589342349372.

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 7661450541667 in words is "seven trillion, six hundred sixty-one billion, four hundred fifty million, five hundred forty-one thousand, six hundred sixty-seven".