445631051665461 has 16 divisors (see below), whose sum is σ = 621617159778048. Its totient is φ = 283674497510400.

The previous prime is 445631051665453. The next prime is 445631051665469. The reversal of 445631051665461 is 164566150136544.

It is an interprime number because it is at equal distance from previous prime (445631051665453) and next prime (445631051665469).

It is not a de Polignac number, because 445631051665461 - 2³ = 445631051665453 is a prime.

It is a super-2 number, since 2×445631051665461² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445631051665469) 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, 38542724860 + ... + 38542736421.

It is an arithmetic number, because the mean of its divisors is an integer number (38851072486128).

Almost surely, 2^{445631051665461} is an apocalyptic number.

445631051665461 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

445631051665461 is a deficient number, since it is larger than the sum of its proper divisors (175986108112587).

445631051665461 is a wasteful number, since it uses less digits than its factorization.

445631051665461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77085461372.

The product of its (nonzero) digits is 31104000, while the sum is 57.

The spelling of 445631051665461 in words is "four hundred forty-five trillion, six hundred thirty-one billion, fifty-one million, six hundred sixty-five thousand, four hundred sixty-one".