5129019621 has 48 divisors (see below), whose sum is σ = 8265154560. Its totient is φ = 3038873760.

The previous prime is 5129019607. The next prime is 5129019631. The reversal of 5129019621 is 1269109215.

5129019621 is a `hidden beast` number, since 5 + 1 + 29 + 0 + 1 + 9 + 621 = 666.

It is not a de Polignac number, because 5129019621 - 2⁵ = 5129019589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5129019601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 802380 + ... + 808746.

It is an arithmetic number, because the mean of its divisors is an integer number (172190720).

Almost surely, 2^5129019621 is an apocalyptic number.

It is an amenable number.

5129019621 is a deficient number, since it is larger than the sum of its proper divisors (3136134939).

5129019621 is a wasteful number, since it uses less digits than its factorization.

5129019621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6566 (or 6563 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 5129019621 is about 71617.1740646055. The cubic root of 5129019621 is about 1724.5592512265.

The spelling of 5129019621 in words is "five billion, one hundred twenty-nine million, nineteen thousand, six hundred twenty-one".