82376778264145 has 4 divisors (see below), whose sum is σ = 98852133916980. Its totient is φ = 65901422611312.

The previous prime is 82376778264097. The next prime is 82376778264197. The reversal of 82376778264145 is 54146287767328.

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

It can be written as a sum of positive squares in 2 ways, for example, as 54005346461889 + 28371431802256 = 7348833^2 + 5326484^2 .

It is a cyclic number.

It is not a de Polignac number, because 82376778264145 - 2¹⁷ = 82376778133073 is a prime.

It is a super-2 number, since 2×82376778264145² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8237677826410 + ... + 8237677826419.

It is an arithmetic number, because the mean of its divisors is an integer number (24713033479245).

Almost surely, 2^{82376778264145} is an apocalyptic number.

It is an amenable number.

82376778264145 is a deficient number, since it is larger than the sum of its proper divisors (16475355652835).

82376778264145 is a wasteful number, since it uses less digits than its factorization.

82376778264145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16475355652834.

The product of its digits is 758661120, while the sum is 70.

The spelling of 82376778264145 in words is "eighty-two trillion, three hundred seventy-six billion, seven hundred seventy-eight million, two hundred sixty-four thousand, one hundred forty-five".