1051665377811 has 16 divisors (see below), whose sum is σ = 1486288659744. Its totient is φ = 659164207104.

The previous prime is 1051665377771. The next prime is 1051665377813. The reversal of 1051665377811 is 1187735661501.

It is not a de Polignac number, because 1051665377811 - 2⁹ = 1051665377299 is a prime.

It is a super-2 number, since 2×1051665377811² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1051665377813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10955890 + ... + 11051463.

It is an arithmetic number, because the mean of its divisors is an integer number (92893041234).

Almost surely, 2^{1051665377811} is an apocalyptic number.

1051665377811 is a deficient number, since it is larger than the sum of its proper divisors (434623281933).

1051665377811 is a wasteful number, since it uses less digits than its factorization.

1051665377811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22008310.

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 1051665377811 in words is "one trillion, fifty-one billion, six hundred sixty-five million, three hundred seventy-seven thousand, eight hundred eleven".