7666547651061 has 16 divisors (see below), whose sum is σ = 11008511989440. Its totient is φ = 4717817245440.

The previous prime is 7666547651017. The next prime is 7666547651083. The reversal of 7666547651061 is 1601567456667.

It is not a de Polignac number, because 7666547651061 - 2¹⁴ = 7666547634677 is a prime.

It is a super-2 number, since 2×7666547651061² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7666547650986 and 7666547651004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666547652061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2101710 + ... + 4444128.

It is an arithmetic number, because the mean of its divisors is an integer number (688031999340).

Almost surely, 2^{7666547651061} is an apocalyptic number.

It is an amenable number.

7666547651061 is a deficient number, since it is larger than the sum of its proper divisors (3341964338379).

7666547651061 is a wasteful number, since it uses less digits than its factorization.

7666547651061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426356.

The product of its (nonzero) digits is 38102400, while the sum is 60.

The spelling of 7666547651061 in words is "seven trillion, six hundred sixty-six billion, five hundred forty-seven million, six hundred fifty-one thousand, sixty-one".