1021440892461 has 16 divisors (see below), whose sum is σ = 1488583925568. Its totient is φ = 617866870400.

The previous prime is 1021440892387. The next prime is 1021440892469. The reversal of 1021440892461 is 1642980441201.

It is a cyclic number.

It is not a de Polignac number, because 1021440892461 - 2¹⁴ = 1021440876077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021440892469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29687946 + ... + 29722331.

It is an arithmetic number, because the mean of its divisors is an integer number (93036495348).

Almost surely, 2^{1021440892461} is an apocalyptic number.

1021440892461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1021440892461 is a deficient number, since it is larger than the sum of its proper divisors (467143033107).

1021440892461 is a wasteful number, since it uses less digits than its factorization.

1021440892461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59410812.

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 1021440892461 in words is "one trillion, twenty-one billion, four hundred forty million, eight hundred ninety-two thousand, four hundred sixty-one".