1050511265551 has 8 divisors (see below), whose sum is σ = 1146138210000. Its totient is φ = 954905307840.

The previous prime is 1050511265537. The next prime is 1050511265563. The reversal of 1050511265551 is 1555621150501.

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

It is a de Polignac number, because none of the positive numbers 2^k-1050511265551 is a prime.

It is a super-2 number, since 2×1050511265551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1050511265551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1050511265591) 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, 5141926 + ... + 5342323.

It is an arithmetic number, because the mean of its divisors is an integer number (143267276250).

Almost surely, 2^{1050511265551} is an apocalyptic number.

1050511265551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1050511265551 is a deficient number, since it is larger than the sum of its proper divisors (95626944449).

1050511265551 is a wasteful number, since it uses less digits than its factorization.

1050511265551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10493369.

The product of its (nonzero) digits is 37500, while the sum is 37.

The spelling of 1050511265551 in words is "one trillion, fifty billion, five hundred eleven million, two hundred sixty-five thousand, five hundred fifty-one".