15278068142 has 8 divisors (see below), whose sum is σ = 22923610416. Its totient is φ = 7636864672.

The previous prime is 15278068139. The next prime is 15278068199. The reversal of 15278068142 is 24186087251.

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

It is a junction number, because it is equal to n+sod(n) for n = 15278068093 and 15278068102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075883 + ... + 1089990.

It is an arithmetic number, because the mean of its divisors is an integer number (2865451302).

Almost surely, 2^15278068142 is an apocalyptic number.

15278068142 is a deficient number, since it is larger than the sum of its proper divisors (7645542274).

15278068142 is a wasteful number, since it uses less digits than its factorization.

15278068142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169402.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 15278068142 in words is "fifteen billion, two hundred seventy-eight million, sixty-eight thousand, one hundred forty-two".