145431367665 has 32 divisors (see below), whose sum is σ = 236676556800. Its totient is φ = 76235079360.

The previous prime is 145431367649. The next prime is 145431367691. The reversal of 145431367665 is 566763134541.

It is not a de Polignac number, because 145431367665 - 2⁴ = 145431367649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6590200 + ... + 6612230.

It is an arithmetic number, because the mean of its divisors is an integer number (7396142400).

Almost surely, 2^145431367665 is an apocalyptic number.

145431367665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145431367665 is a deficient number, since it is larger than the sum of its proper divisors (91245189135).

145431367665 is a wasteful number, since it uses less digits than its factorization.

145431367665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29557.

The product of its digits is 5443200, while the sum is 51.

The spelling of 145431367665 in words is "one hundred forty-five billion, four hundred thirty-one million, three hundred sixty-seven thousand, six hundred sixty-five".