6129821601 has 12 divisors (see below), whose sum is σ = 8885477328. Its totient is φ = 4072105944.

The previous prime is 6129821587. The next prime is 6129821623. The reversal of 6129821601 is 1061289216.

6129821601 is a `hidden beast` number, since 6 + 1 + 29 + 8 + 21 + 601 = 666.

It is not a de Polignac number, because 6129821601 - 2⁵ = 6129821569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6129821681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1200795 + ... + 1205888.

It is an arithmetic number, because the mean of its divisors is an integer number (740456444).

Almost surely, 2^6129821601 is an apocalyptic number.

It is an amenable number.

6129821601 is a deficient number, since it is larger than the sum of its proper divisors (2755655727).

6129821601 is a wasteful number, since it uses less digits than its factorization.

6129821601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406972 (or 2406969 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 6129821601 is about 78293.1772314804. The cubic root of 6129821601 is about 1830.1328300967.

The spelling of 6129821601 in words is "six billion, one hundred twenty-nine million, eight hundred twenty-one thousand, six hundred one".