7740166777461 has 12 divisors (see below), whose sum is σ = 11180276284320. Its totient is φ = 5160094854120.

The previous prime is 7740166777439. The next prime is 7740166777543. The reversal of 7740166777461 is 1647776610477.

7740166777461 is a `hidden beast` number, since 7 + 7 + 4 + 0 + 166 + 7 + 7 + 7 + 461 = 666.

It is not a de Polignac number, because 7740166777461 - 2⁶ = 7740166777397 is a prime.

It is a super-2 number, since 2×7740166777461² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7740166787461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2105560 + ... + 4462478.

It is an arithmetic number, because the mean of its divisors is an integer number (931689690360).

Almost surely, 2^{7740166777461} is an apocalyptic number.

It is an amenable number.

7740166777461 is a deficient number, since it is larger than the sum of its proper divisors (3440109506859).

7740166777461 is a wasteful number, since it uses less digits than its factorization.

7740166777461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721816 (or 2721813 counting only the distinct ones).

The product of its (nonzero) digits is 58084992, while the sum is 63.

The spelling of 7740166777461 in words is "seven trillion, seven hundred forty billion, one hundred sixty-six million, seven hundred seventy-seven thousand, four hundred sixty-one".