15679209140 has 192 divisors, whose sum is σ = 41977958400. Its totient is φ = 4895170560.

The previous prime is 15679209061. The next prime is 15679209163. The reversal of 15679209140 is 4190297651.

It is a junction number, because it is equal to n+sod(n) for n = 15679209091 and 15679209100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3613052 + ... + 3617388.

It is an arithmetic number, because the mean of its divisors is an integer number (218635200).

Almost surely, 2^15679209140 is an apocalyptic number.

15679209140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15679209140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20988979200).

15679209140 is an abundant number, since it is smaller than the sum of its proper divisors (26298749260).

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

15679209140 is a wasteful number, since it uses less digits than its factorization.

15679209140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4415 (or 4399 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 15679209140 in words is "fifteen billion, six hundred seventy-nine million, two hundred nine thousand, one hundred forty".