1051343440000 has 160 divisors (see below), whose sum is σ = 2991148776000. Its totient is φ = 360460416000.

The previous prime is 1051343439989. The next prime is 1051343440013. The reversal of 1051343440000 is 443431501.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×1051343440000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 378700 + ... + 1498699.

It is an arithmetic number, because the mean of its divisors is an integer number (18694679850).

Almost surely, 2^{1051343440000} is an apocalyptic number.

1051343440000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051343440000 is an abundant number, since it is smaller than the sum of its proper divisors (1939805336000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1051343440000 is an frugal number, since it uses more digits than its factorization.

1051343440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877440 (or 1877413 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 1051343440000 its reverse (443431501), we get a palindrome (1051786871501).

The spelling of 1051343440000 in words is "one trillion, fifty-one billion, three hundred forty-three million, four hundred forty thousand".