15243533551 has 8 divisors (see below), whose sum is σ = 15489084240. Its totient is φ = 14999924352.

The previous prime is 15243533537. The next prime is 15243533563. The reversal of 15243533551 is 15533534251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15243533551 - 2⁷ = 15243533423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15243533551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15243533051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469540 + ... + 500953.

It is an arithmetic number, because the mean of its divisors is an integer number (1936135530).

Almost surely, 2^15243533551 is an apocalyptic number.

15243533551 is a deficient number, since it is larger than the sum of its proper divisors (245550689).

15243533551 is a wasteful number, since it uses less digits than its factorization.

15243533551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970745.

The product of its digits is 135000, while the sum is 37.

The spelling of 15243533551 in words is "fifteen billion, two hundred forty-three million, five hundred thirty-three thousand, five hundred fifty-one".