2478723373865 has 8 divisors (see below), whose sum is σ = 3016361965248. Its totient is φ = 1955049421360.

The previous prime is 2478723373853. The next prime is 2478723373909. The reversal of 2478723373865 is 5683733278742.

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

It is not a de Polignac number, because 2478723373865 - 2⁶ = 2478723373801 is a prime.

It is a super-2 number, since 2×2478723373865² (a number of 26 digits) contains 22 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, 3491159327 + ... + 3491160036.

It is an arithmetic number, because the mean of its divisors is an integer number (377045245656).

Almost surely, 2^{2478723373865} is an apocalyptic number.

It is an amenable number.

2478723373865 is a deficient number, since it is larger than the sum of its proper divisors (537638591383).

2478723373865 is an equidigital number, since it uses as much as digits as its factorization.

2478723373865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6982319439.

The product of its digits is 284497920, while the sum is 65.

The spelling of 2478723373865 in words is "two trillion, four hundred seventy-eight billion, seven hundred twenty-three million, three hundred seventy-three thousand, eight hundred sixty-five".