49401260021 has 8 divisors (see below), whose sum is σ = 51070450200. Its totient is φ = 47754178560.

The previous prime is 49401260017. The next prime is 49401260053. The reversal of 49401260021 is 12006210494.

It can be written as a sum of positive squares in 4 ways, for example, as 10944088996 + 38457171025 = 104614^2 + 196105^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49401260021 - 2² = 49401260017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49401260071) 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 7 ways as a sum of consecutive naturals, for example, 5522636 + ... + 5531573.

It is an arithmetic number, because the mean of its divisors is an integer number (6383806275).

Almost surely, 2^49401260021 is an apocalyptic number.

49401260021 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

49401260021 is a deficient number, since it is larger than the sum of its proper divisors (1669190179).

49401260021 is a wasteful number, since it uses less digits than its factorization.

49401260021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11054359.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 49401260021 in words is "forty-nine billion, four hundred one million, two hundred sixty thousand, twenty-one".