248801967621 has 6 divisors (see below), whose sum is σ = 359380619910. Its totient is φ = 165867978408.

The previous prime is 248801967553. The next prime is 248801967629. The reversal of 248801967621 is 126769108842.

It is a happy number.

248801967621 is a `hidden beast` number, since 2 + 4 + 8 + 8 + 0 + 1 + 9 + 6 + 7 + 621 = 666.

It can be written as a sum of positive squares in only one way, i.e., 148367484225 + 100434483396 = 385185^2 + 316914^2 .

It is not a de Polignac number, because 248801967621 - 2⁷ = 248801967493 is a prime.

It is a super-2 number, since 2×248801967621² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248801967629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13822331526 + ... + 13822331543.

It is an arithmetic number, because the mean of its divisors is an integer number (59896769985).

Almost surely, 2^248801967621 is an apocalyptic number.

It is an amenable number.

248801967621 is a deficient number, since it is larger than the sum of its proper divisors (110578652289).

248801967621 is a wasteful number, since it uses less digits than its factorization.

248801967621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27644663075 (or 27644663072 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 248801967621 in words is "two hundred forty-eight billion, eight hundred one million, nine hundred sixty-seven thousand, six hundred twenty-one".