44145261021 has 8 divisors (see below), whose sum is σ = 58862381760. Its totient is φ = 29429157152.

The previous prime is 44145260993. The next prime is 44145261023. The reversal of 44145261021 is 12016254144.

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 44145261021 - 2⁷ = 44145260893 is a prime.

It is a super-2 number, since 2×44145261021² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 44145261021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44145261023) 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, 146385 + ... + 331238.

It is an arithmetic number, because the mean of its divisors is an integer number (7357797720).

Almost surely, 2^44145261021 is an apocalyptic number.

It is an amenable number.

44145261021 is a deficient number, since it is larger than the sum of its proper divisors (14717120739).

44145261021 is a wasteful number, since it uses less digits than its factorization.

44145261021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508435.

The product of its (nonzero) digits is 7680, while the sum is 30.

The spelling of 44145261021 in words is "forty-four billion, one hundred forty-five million, two hundred sixty-one thousand, twenty-one".