1000005509551 has 8 divisors (see below), whose sum is σ = 1058852939040. Its totient is φ = 941160699648.

The previous prime is 1000005509539. The next prime is 1000005509561. The reversal of 1000005509551 is 1559055000001.

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

It is a cyclic number.

It is not a de Polignac number, because 1000005509551 - 2¹¹ = 1000005507503 is a prime.

It is a super-2 number, since 2×1000005509551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000005509561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160035 + ... + 1423243.

It is an arithmetic number, because the mean of its divisors is an integer number (132356617380).

Almost surely, 2^{1000005509551} is an apocalyptic number.

1000005509551 is a deficient number, since it is larger than the sum of its proper divisors (58847429489).

1000005509551 is a wasteful number, since it uses less digits than its factorization.

1000005509551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309793.

The product of its (nonzero) digits is 5625, while the sum is 31.

The spelling of 1000005509551 in words is "one trillion, five million, five hundred nine thousand, five hundred fifty-one".