44021401657 has 2 divisors, whose sum is σ = 44021401658. Its totient is φ = 44021401656.

The previous prime is 44021401583. The next prime is 44021401667. The reversal of 44021401657 is 75610412044.

44021401657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33569201961 + 10452199696 = 183219^2 + 102236^2 .

It is a cyclic number.

It is not a de Polignac number, because 44021401657 - 2¹⁵ = 44021368889 is a prime.

It is not a weakly prime, because it can be changed into another prime (44021401667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22010700828 + 22010700829.

It is an arithmetic number, because the mean of its divisors is an integer number (22010700829).

Almost surely, 2^44021401657 is an apocalyptic number.

It is an amenable number.

44021401657 is a deficient number, since it is larger than the sum of its proper divisors (1).

44021401657 is an equidigital number, since it uses as much as digits as its factorization.

44021401657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 44021401657 in words is "forty-four billion, twenty-one million, four hundred one thousand, six hundred fifty-seven".