102408155046865 has 8 divisors (see below), whose sum is σ = 122890019569128. Its totient is φ = 81926368362240.

The previous prime is 102408155046853. The next prime is 102408155046931. The reversal of 102408155046865 is 568640551804201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19431486669456 + 82976668377409 = 4408116^2 + 9109153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102408155046865 - 2¹¹ = 102408155044817 is a prime.

It is a super-3 number, since 3×102408155046865³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16524712 + ... + 21860521.

It is an arithmetic number, because the mean of its divisors is an integer number (15361252446141).

Almost surely, 2^{102408155046865} is an apocalyptic number.

It is an amenable number.

102408155046865 is a deficient number, since it is larger than the sum of its proper divisors (20481864522263).

102408155046865 is an equidigital number, since it uses as much as digits as its factorization.

102408155046865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38918819.

The product of its (nonzero) digits is 9216000, while the sum is 55.

The spelling of 102408155046865 in words is "one hundred two trillion, four hundred eight billion, one hundred fifty-five million, forty-six thousand, eight hundred sixty-five".