10129775481 has 24 divisors (see below), whose sum is σ = 17261597184. Its totient is φ = 5601718080.

The previous prime is 10129775477. The next prime is 10129775489. The reversal of 10129775481 is 18457792101.

It is a happy number.

10129775481 is a `hidden beast` number, since 1 + 0 + 12 + 97 + 7 + 548 + 1 = 666.

It is not a de Polignac number, because 10129775481 - 2² = 10129775477 is a prime.

It is a super-2 number, since 2×10129775481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10129775489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2591436 + ... + 2595341.

It is an arithmetic number, because the mean of its divisors is an integer number (719233216).

Almost surely, 2^10129775481 is an apocalyptic number.

It is an amenable number.

10129775481 is a deficient number, since it is larger than the sum of its proper divisors (7131821703).

10129775481 is a wasteful number, since it uses less digits than its factorization.

10129775481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186821 (or 5186818 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The spelling of 10129775481 in words is "ten billion, one hundred twenty-nine million, seven hundred seventy-five thousand, four hundred eighty-one".