444507728137 has 16 divisors (see below), whose sum is σ = 491367444480. Its totient is φ = 398729494800.

The previous prime is 444507728113. The next prime is 444507728183. The reversal of 444507728137 is 731827705444.

It is a cyclic number.

It is not a de Polignac number, because 444507728137 - 2²⁷ = 444373510409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (444507728537) 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, 1214062 + ... + 1537192.

It is an arithmetic number, because the mean of its divisors is an integer number (30710465280).

Almost surely, 2^444507728137 is an apocalyptic number.

It is an amenable number.

444507728137 is a deficient number, since it is larger than the sum of its proper divisors (46859716343).

444507728137 is a wasteful number, since it uses less digits than its factorization.

444507728137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324804.

The product of its (nonzero) digits is 5268480, while the sum is 52.

The spelling of 444507728137 in words is "four hundred forty-four billion, five hundred seven million, seven hundred twenty-eight thousand, one hundred thirty-seven".