15534510245042 has 4 divisors (see below), whose sum is σ = 23301765367566. Its totient is φ = 7767255122520.

The previous prime is 15534510244963. The next prime is 15534510245053. The reversal of 15534510245042 is 24054201543551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11087308317121 + 4447201927921 = 3329761^2 + 2108839^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3883627561259 + ... + 3883627561262.

Almost surely, 2^{15534510245042} is an apocalyptic number.

15534510245042 is a deficient number, since it is larger than the sum of its proper divisors (7767255122524).

15534510245042 is an equidigital number, since it uses as much as digits as its factorization.

15534510245042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7767255122523.

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 15534510245042 its reverse (24054201543551), we get a palindrome (39588711788593).

The spelling of 15534510245042 in words is "fifteen trillion, five hundred thirty-four billion, five hundred ten million, two hundred forty-five thousand, forty-two".