2028531957815 has 64 divisors (see below), whose sum is σ = 2864633748480. Its totient is φ = 1363008384000.

The previous prime is 2028531957721. The next prime is 2028531957821. The reversal of 2028531957815 is 5187591358202.

It is a de Polignac number, because none of the positive numbers 2^k-2028531957815 is a prime.

It is a super-2 number, since 2×2028531957815² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 124970750 + ... + 124986980.

It is an arithmetic number, because the mean of its divisors is an integer number (44759902320).

Almost surely, 2^{2028531957815} is an apocalyptic number.

2028531957815 is a deficient number, since it is larger than the sum of its proper divisors (836101790665).

2028531957815 is a wasteful number, since it uses less digits than its factorization.

2028531957815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19224.

The product of its (nonzero) digits is 6048000, while the sum is 56.

The spelling of 2028531957815 in words is "two trillion, twenty-eight billion, five hundred thirty-one million, nine hundred fifty-seven thousand, eight hundred fifteen".