1021606940474 has 8 divisors (see below), whose sum is σ = 1538373097908. Its totient is φ = 508815907840.

The previous prime is 1021606940413. The next prime is 1021606940477. The reversal of 1021606940474 is 4740496061201.

It can be written as a sum of positive squares in 2 ways, for example, as 921936030625 + 99670909849 = 960175^2 + 315707^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1021606940477) 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, 993780557 + ... + 993781584.

Almost surely, 2^{1021606940474} is an apocalyptic number.

1021606940474 is a deficient number, since it is larger than the sum of its proper divisors (516766157434).

1021606940474 is a wasteful number, since it uses less digits than its factorization.

1021606940474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987562400.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 1021606940474 in words is "one trillion, twenty-one billion, six hundred six million, nine hundred forty thousand, four hundred seventy-four".