15878570340 has 48 divisors (see below), whose sum is σ = 44487696960. Its totient is φ = 4231647360.

The previous prime is 15878570339. The next prime is 15878570371. The reversal of 15878570340 is 4307587851.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 15878570340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15631 + ... + 178889.

It is an arithmetic number, because the mean of its divisors is an integer number (926827020).

Almost surely, 2^15878570340 is an apocalyptic number.

15878570340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15878570340 is an abundant number, since it is smaller than the sum of its proper divisors (28609126620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15878570340 is a wasteful number, since it uses less digits than its factorization.

15878570340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164892 (or 164890 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 15878570340 in words is "fifteen billion, eight hundred seventy-eight million, five hundred seventy thousand, three hundred forty".