21901048407996 has 48 divisors (see below), whose sum is σ = 52774665259008. Its totient is φ = 7061673124800.

The previous prime is 21901048407919. The next prime is 21901048408013. The reversal of 21901048407996 is 69970484010912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12427680 + ... + 14080103.

It is an arithmetic number, because the mean of its divisors is an integer number (1099472192896).

Almost surely, 2^{21901048407996} is an apocalyptic number.

It is an amenable number.

21901048407996 is an abundant number, since it is smaller than the sum of its proper divisors (30873616851012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21901048407996 is a wasteful number, since it uses less digits than its factorization.

21901048407996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26510042 (or 26510040 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 60.

The spelling of 21901048407996 in words is "twenty-one trillion, nine hundred one billion, forty-eight million, four hundred seven thousand, nine hundred ninety-six".