145403630442665 has 32 divisors (see below), whose sum is σ = 200031858720000. Its totient is φ = 99395157270528.

The previous prime is 145403630442647. The next prime is 145403630442667. The reversal of 145403630442665 is 566244036304541.

It is not a de Polignac number, because 145403630442665 - 2⁸ = 145403630442409 is a prime.

It is a super-2 number, since 2×145403630442665² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145403630442667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13644566 + ... + 21839904.

It is an arithmetic number, because the mean of its divisors is an integer number (6250995585000).

Almost surely, 2^{145403630442665} is an apocalyptic number.

It is an amenable number.

145403630442665 is a deficient number, since it is larger than the sum of its proper divisors (54628228277335).

145403630442665 is a wasteful number, since it uses less digits than its factorization.

145403630442665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8196929.

The product of its (nonzero) digits is 24883200, while the sum is 53.

The spelling of 145403630442665 in words is "one hundred forty-five trillion, four hundred three billion, six hundred thirty million, four hundred forty-two thousand, six hundred sixty-five".