165420105740776 has 8 divisors (see below), whose sum is σ = 310162698263970. Its totient is φ = 82710052870384.

The previous prime is 165420105740711. The next prime is 165420105740809. The reversal of 165420105740776 is 677047501024561.

165420105740776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 137589944055876 + 27830161684900 = 11729874^2 + 5275430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×165420105740776² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10338756608791 + ... + 10338756608806.

Almost surely, 2^{165420105740776} is an apocalyptic number.

It is an amenable number.

165420105740776 is a deficient number, since it is larger than the sum of its proper divisors (144742592523194).

165420105740776 is a wasteful number, since it uses less digits than its factorization.

165420105740776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20677513217603 (or 20677513217599 counting only the distinct ones).

The product of its (nonzero) digits is 9878400, while the sum is 55.

The spelling of 165420105740776 in words is "one hundred sixty-five trillion, four hundred twenty billion, one hundred five million, seven hundred forty thousand, seven hundred seventy-six".