1021164962687 has 4 divisors (see below), whose sum is σ = 1023117477480. Its totient is φ = 1019212447896.

The previous prime is 1021164962663. The next prime is 1021164962761. The reversal of 1021164962687 is 7862694611201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021164962687 - 2⁸ = 1021164962431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021164962627) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 976256612 + ... + 976257657.

It is an arithmetic number, because the mean of its divisors is an integer number (255779369370).

Almost surely, 2^{1021164962687} is an apocalyptic number.

1021164962687 is a deficient number, since it is larger than the sum of its proper divisors (1952514793).

1021164962687 is an equidigital number, since it uses as much as digits as its factorization.

1021164962687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952514792.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 1021164962687 in words is "one trillion, twenty-one billion, one hundred sixty-four million, nine hundred sixty-two thousand, six hundred eighty-seven".