84451838478367 has 12 divisors (see below), whose sum is σ = 87796953644400. Its totient is φ = 81229668998912.

The previous prime is 84451838478347. The next prime is 84451838478461. The reversal of 84451838478367 is 76387483815448.

It is not a de Polignac number, because 84451838478367 - 2³⁹ = 83902082664479 is a prime.

It is a super-2 number, since 2×84451838478367² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84451838478293 and 84451838478302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84451838478347) 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, 190688242 + ... + 191130607.

It is an arithmetic number, because the mean of its divisors is an integer number (7316412803700).

Almost surely, 2^{84451838478367} is an apocalyptic number.

84451838478367 is a deficient number, since it is larger than the sum of its proper divisors (3345115166033).

84451838478367 is a wasteful number, since it uses less digits than its factorization.

84451838478367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381819170 (or 381819141 counting only the distinct ones).

The product of its digits is 3468165120, while the sum is 76.

The spelling of 84451838478367 in words is "eighty-four trillion, four hundred fifty-one billion, eight hundred thirty-eight million, four hundred seventy-eight thousand, three hundred sixty-seven".