15442544530 has 48 divisors (see below), whose sum is σ = 32668246296. Its totient is φ = 5239987200.

The previous prime is 15442544501. The next prime is 15442544543. The reversal of 15442544530 is 3544524451.

It can be written as a sum of positive squares in 4 ways, for example, as 15294021561 + 148522969 = 123669^2 + 12187^2 .

It is a super-2 number, since 2×15442544530² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15442544530.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114921 + ... + 209980.

Almost surely, 2^15442544530 is an apocalyptic number.

15442544530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15442544530 is an abundant number, since it is smaller than the sum of its proper divisors (17225701766).

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

15442544530 is a wasteful number, since it uses less digits than its factorization.

15442544530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325019 (or 325012 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

The spelling of 15442544530 in words is "fifteen billion, four hundred forty-two million, five hundred forty-four thousand, five hundred thirty".