82320477631645 has 16 divisors (see below), whose sum is σ = 113436830422080. Its totient is φ = 56718415209600.

The previous prime is 82320477631633. The next prime is 82320477631657. The reversal of 82320477631645 is 54613677402328.

It is an interprime number because it is at equal distance from previous prime (82320477631633) and next prime (82320477631657).

It is not a de Polignac number, because 82320477631645 - 2¹³ = 82320477623453 is a prime.

It is a super-2 number, since 2×82320477631645² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82320477631645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39387787296 + ... + 39387789385.

It is an arithmetic number, because the mean of its divisors is an integer number (7089801901380).

Almost surely, 2^{82320477631645} is an apocalyptic number.

It is an amenable number.

82320477631645 is a deficient number, since it is larger than the sum of its proper divisors (31116352790435).

82320477631645 is a wasteful number, since it uses less digits than its factorization.

82320477631645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78775576716.

The product of its (nonzero) digits is 40642560, while the sum is 58.

The spelling of 82320477631645 in words is "eighty-two trillion, three hundred twenty billion, four hundred seventy-seven million, six hundred thirty-one thousand, six hundred forty-five".