1129381008645 has 32 divisors (see below), whose sum is σ = 1886514038784. Its totient is φ = 575861140800.

The previous prime is 1129381008641. The next prime is 1129381008653. The reversal of 1129381008645 is 5468001839211.

It is a happy number.

It is not a de Polignac number, because 1129381008645 - 2² = 1129381008641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1129381008594 and 1129381008603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129381008641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120121 + ... + 1507710.

It is an arithmetic number, because the mean of its divisors is an integer number (58953563712).

Almost surely, 2^{1129381008645} is an apocalyptic number.

1129381008645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1129381008645 is a deficient number, since it is larger than the sum of its proper divisors (757133030139).

1129381008645 is a wasteful number, since it uses less digits than its factorization.

1129381008645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629873.

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 1129381008645 in words is "one trillion, one hundred twenty-nine billion, three hundred eighty-one million, eight thousand, six hundred forty-five".