1000434051521 has 4 divisors (see below), whose sum is σ = 1006424674752. Its totient is φ = 994443428292.

The previous prime is 1000434051389. The next prime is 1000434051557. The reversal of 1000434051521 is 1251504340001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000434051521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000434051821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2995311365 + ... + 2995311698.

It is an arithmetic number, because the mean of its divisors is an integer number (251606168688).

Almost surely, 2^{1000434051521} is an apocalyptic number.

It is an amenable number.

1000434051521 is a deficient number, since it is larger than the sum of its proper divisors (5990623231).

1000434051521 is an equidigital number, since it uses as much as digits as its factorization.

1000434051521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990623230.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 1000434051521 its reverse (1251504340001), we get a palindrome (2251938391522).

The spelling of 1000434051521 in words is "one trillion, four hundred thirty-four million, fifty-one thousand, five hundred twenty-one".