15140817842 has 8 divisors (see below), whose sum is σ = 22714891500. Its totient is φ = 7569187344.

The previous prime is 15140817827. The next prime is 15140817851. The reversal of 15140817842 is 24871804151.

It can be written as a sum of positive squares in 2 ways, for example, as 15126294121 + 14523721 = 122989^2 + 3811^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 15140817842.

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, 595217 + ... + 620132.

Almost surely, 2^15140817842 is an apocalyptic number.

15140817842 is a deficient number, since it is larger than the sum of its proper divisors (7574073658).

15140817842 is a wasteful number, since it uses less digits than its factorization.

15140817842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221580.

The product of its (nonzero) digits is 71680, while the sum is 41.

The spelling of 15140817842 in words is "fifteen billion, one hundred forty million, eight hundred seventeen thousand, eight hundred forty-two".