15345405642 has 64 divisors (see below), whose sum is σ = 35728957440. Its totient is φ = 4303440576.

The previous prime is 15345405611. The next prime is 15345405661. The reversal of 15345405642 is 24650454351.

It is a self number, because there is not a number n which added to its sum of digits gives 15345405642.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474183 + ... + 505509.

It is an arithmetic number, because the mean of its divisors is an integer number (558264960).

Almost surely, 2^15345405642 is an apocalyptic number.

15345405642 is an abundant number, since it is smaller than the sum of its proper divisors (20383551798).

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

15345405642 is a wasteful number, since it uses less digits than its factorization.

15345405642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31555.

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

Adding to 15345405642 its reverse (24650454351), we get a palindrome (39995859993).

The spelling of 15345405642 in words is "fifteen billion, three hundred forty-five million, four hundred five thousand, six hundred forty-two".