1012531287650 has 24 divisors (see below), whose sum is σ = 1885441129104. Its totient is φ = 404553819600.

The previous prime is 1012531287637. The next prime is 1012531287737. The reversal of 1012531287650 is 567821352101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1012531287598 and 1012531287607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11422796 + ... + 11511095.

It is an arithmetic number, because the mean of its divisors is an integer number (78560047046).

Almost surely, 2^{1012531287650} is an apocalyptic number.

1012531287650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012531287650 is a deficient number, since it is larger than the sum of its proper divisors (872909841454).

1012531287650 is a wasteful number, since it uses less digits than its factorization.

1012531287650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22934786 (or 22934781 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 1012531287650 in words is "one trillion, twelve billion, five hundred thirty-one million, two hundred eighty-seven thousand, six hundred fifty".