15570427340 has 48 divisors (see below), whose sum is σ = 35302052352. Its totient is φ = 5734561536.

The previous prime is 15570427321. The next prime is 15570427451. The reversal of 15570427340 is 4372407551.

It is a junction number, because it is equal to n+sod(n) for n = 15570427294 and 15570427303.

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, 27797 + ... + 178643.

It is an arithmetic number, because the mean of its divisors is an integer number (735459424).

Almost surely, 2^15570427340 is an apocalyptic number.

15570427340 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 15570427340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17651026176).

15570427340 is an abundant number, since it is smaller than the sum of its proper divisors (19731625012).

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

15570427340 is a wasteful number, since it uses less digits than its factorization.

15570427340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151266 (or 151264 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 38.

The spelling of 15570427340 in words is "fifteen billion, five hundred seventy million, four hundred twenty-seven thousand, three hundred forty".