15540534426 has 16 divisors (see below), whose sum is σ = 31271752224. Its totient is φ = 5148397584.

The previous prime is 15540534421. The next prime is 15540534463. The reversal of 15540534426 is 62443504551.

It is a super-2 number, since 2×15540534426² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15540534421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7944081 + ... + 7946036.

It is an arithmetic number, because the mean of its divisors is an integer number (1954484514).

Almost surely, 2^15540534426 is an apocalyptic number.

15540534426 is an abundant number, since it is smaller than the sum of its proper divisors (15731217798).

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

15540534426 is a wasteful number, since it uses less digits than its factorization.

15540534426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15890285.

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 15540534426 in words is "fifteen billion, five hundred forty million, five hundred thirty-four thousand, four hundred twenty-six".