1000023555551 has 8 divisors (see below), whose sum is σ = 1040623647360. Its totient is φ = 960211815192.

The previous prime is 1000023555539. The next prime is 1000023555631. The reversal of 1000023555551 is 1555553200001.

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 1000023555551 - 2¹⁴ = 1000023539167 is a prime.

It is a super-2 number, since 2×1000023555551² (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 (1000023555151) 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, 197085275 + ... + 197090348.

It is an arithmetic number, because the mean of its divisors is an integer number (130077955920).

Almost surely, 2^{1000023555551} is an apocalyptic number.

1000023555551 is a deficient number, since it is larger than the sum of its proper divisors (40600091809).

1000023555551 is an equidigital number, since it uses as much as digits as its factorization.

1000023555551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394175725.

The product of its (nonzero) digits is 18750, while the sum is 32.

Adding to 1000023555551 its reverse (1555553200001), we get a palindrome (2555576755552).

The spelling of 1000023555551 in words is "one trillion, twenty-three million, five hundred fifty-five thousand, five hundred fifty-one".