68215678054 has 4 divisors (see below), whose sum is σ = 102323517084. Its totient is φ = 34107839026.

The previous prime is 68215677991. The next prime is 68215678067. The reversal of 68215678054 is 45087651286.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45087651286 = 2 ⋅22543825643.

It is a junction number, because it is equal to n+sod(n) for n = 68215677992 and 68215678010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17053919512 + ... + 17053919515.

It is an arithmetic number, because the mean of its divisors is an integer number (25580879271).

Almost surely, 2^68215678054 is an apocalyptic number.

68215678054 is a deficient number, since it is larger than the sum of its proper divisors (34107839030).

68215678054 is a wasteful number, since it uses less digits than its factorization.

68215678054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34107839029.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 68215678054 in words is "sixty-eight billion, two hundred fifteen million, six hundred seventy-eight thousand, fifty-four".