1036987872921 has 96 divisors (see below), whose sum is σ = 2015088042240. Its totient is φ = 496277798400.

The previous prime is 1036987872883. The next prime is 1036987872923. The reversal of 1036987872921 is 1292787896301.

It is not a de Polignac number, because 1036987872921 - 2¹⁰ = 1036987871897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1036987872923) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4472511 + ... + 4698651.

It is an arithmetic number, because the mean of its divisors is an integer number (20990500440).

Almost surely, 2^{1036987872921} is an apocalyptic number.

1036987872921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1036987872921 is a deficient number, since it is larger than the sum of its proper divisors (978100169319).

1036987872921 is a wasteful number, since it uses less digits than its factorization.

1036987872921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226687 (or 226684 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 1036987872921 in words is "one trillion, thirty-six billion, nine hundred eighty-seven million, eight hundred seventy-two thousand, nine hundred twenty-one".