44187221697 has 16 divisors (see below), whose sum is σ = 59222016000. Its totient is φ = 29305682384.

The previous prime is 44187221677. The next prime is 44187221713. The reversal of 44187221697 is 79612278144.

44187221697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 44187221697 - 2¹⁰ = 44187220673 is a prime.

It is a super-2 number, since 2×44187221697² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44187221647) 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, 402304 + ... + 500222.

It is an arithmetic number, because the mean of its divisors is an integer number (3701376000).

Almost surely, 2^44187221697 is an apocalyptic number.

It is an amenable number.

44187221697 is a deficient number, since it is larger than the sum of its proper divisors (15034794303).

44187221697 is a wasteful number, since it uses less digits than its factorization.

44187221697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98700.

The product of its digits is 1354752, while the sum is 51.

The spelling of 44187221697 in words is "forty-four billion, one hundred eighty-seven million, two hundred twenty-one thousand, six hundred ninety-seven".