82405771545 has 16 divisors (see below), whose sum is σ = 136102436352. Its totient is φ = 42532010880.

The previous prime is 82405771523. The next prime is 82405771571. The reversal of 82405771545 is 54517750428.

It is not a de Polignac number, because 82405771545 - 2¹⁰ = 82405770521 is a prime.

It is a super-2 number, since 2×82405771545² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82405771494 and 82405771503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88607892 + ... + 88608821.

It is an arithmetic number, because the mean of its divisors is an integer number (8506402272).

Almost surely, 2^82405771545 is an apocalyptic number.

It is an amenable number.

82405771545 is a deficient number, since it is larger than the sum of its proper divisors (53696664807).

82405771545 is a wasteful number, since it uses less digits than its factorization.

82405771545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177216752.

The product of its (nonzero) digits is 1568000, while the sum is 48.

The spelling of 82405771545 in words is "eighty-two billion, four hundred five million, seven hundred seventy-one thousand, five hundred forty-five".