15243000550864 has 20 divisors (see below), whose sum is σ = 29539465208260. Its totient is φ = 7619912755200.

The previous prime is 15243000550837. The next prime is 15243000550949. The reversal of 15243000550864 is 46805500034251.

It can be written as a sum of positive squares in 2 ways, for example, as 11147638860864 + 4095361690000 = 3338808^2 + 2023700^2 .

It is a super-2 number, since 2×15243000550864² (a number of 27 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 15243000550864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99140799 + ... + 99294430.

It is an arithmetic number, because the mean of its divisors is an integer number (1476973260413).

Almost surely, 2^{15243000550864} is an apocalyptic number.

It is an amenable number.

15243000550864 is a deficient number, since it is larger than the sum of its proper divisors (14296464657396).

15243000550864 is a wasteful number, since it uses less digits than its factorization.

15243000550864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198440038 (or 198440032 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 15243000550864 in words is "fifteen trillion, two hundred forty-three billion, five hundred fifty thousand, eight hundred sixty-four".