4921639015791 has 16 divisors (see below), whose sum is σ = 6570547746048. Its totient is φ = 3276913113600.

The previous prime is 4921639015753. The next prime is 4921639015801. The reversal of 4921639015791 is 1975109361294.

It is not a de Polignac number, because 4921639015791 - 2⁷ = 4921639015663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4921639015721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12014671 + ... + 12417551.

It is an arithmetic number, because the mean of its divisors is an integer number (410659234128).

Almost surely, 2^{4921639015791} is an apocalyptic number.

4921639015791 is a deficient number, since it is larger than the sum of its proper divisors (1648908730257).

4921639015791 is a wasteful number, since it uses less digits than its factorization.

4921639015791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408062.

The product of its (nonzero) digits is 3674160, while the sum is 57.

The spelling of 4921639015791 in words is "four trillion, nine hundred twenty-one billion, six hundred thirty-nine million, fifteen thousand, seven hundred ninety-one".