1129866415947 has 6 divisors (see below), whose sum is σ = 1632029267492. Its totient is φ = 753244277292.

The previous prime is 1129866415829. The next prime is 1129866415981. The reversal of 1129866415947 is 7495146689211.

1129866415947 is a `hidden beast` number, since 1 + 129 + 8 + 6 + 6 + 415 + 94 + 7 = 666.

It is not a de Polignac number, because 1129866415947 - 2²⁶ = 1129799307083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129866413947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62770356433 + ... + 62770356450.

Almost surely, 2^{1129866415947} is an apocalyptic number.

1129866415947 is a deficient number, since it is larger than the sum of its proper divisors (502162851545).

1129866415947 is a wasteful number, since it uses less digits than its factorization.

1129866415947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125540712889 (or 125540712886 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The spelling of 1129866415947 in words is "one trillion, one hundred twenty-nine billion, eight hundred sixty-six million, four hundred fifteen thousand, nine hundred forty-seven".