145847609999 has 64 divisors (see below), whose sum is σ = 188273030400. Its totient is φ = 109876580352.

The previous prime is 145847609987. The next prime is 145847610001. The reversal of 145847609999 is 999906748541.

It is a Cunningham number, because it is equal to 381900²-1.

It is not a de Polignac number, because 145847609999 - 2⁴ = 145847609983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145847609399) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 143975417 + ... + 143976429.

It is an arithmetic number, because the mean of its divisors is an integer number (2941766100).

Almost surely, 2^145847609999 is an apocalyptic number.

145847609999 is a deficient number, since it is larger than the sum of its proper divisors (42425420401).

145847609999 is a wasteful number, since it uses less digits than its factorization.

145847609999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764.

The product of its (nonzero) digits is 176359680, while the sum is 71.

The spelling of 145847609999 in words is "one hundred forty-five billion, eight hundred forty-seven million, six hundred nine thousand, nine hundred ninety-nine".