145885961637 has 24 divisors (see below), whose sum is σ = 227078455968. Its totient is φ = 89718717600.

The previous prime is 145885961597. The next prime is 145885961659. The reversal of 145885961637 is 736169588541.

145885961637 is a `hidden beast` number, since 1 + 4 + 5 + 8 + 8 + 5 + 9 + 616 + 3 + 7 = 666.

It is not a de Polignac number, because 145885961637 - 2¹⁵ = 145885928869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145885961437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213039 + ... + 580652.

It is an arithmetic number, because the mean of its divisors is an integer number (9461602332).

Almost surely, 2^145885961637 is an apocalyptic number.

It is an amenable number.

145885961637 is a deficient number, since it is larger than the sum of its proper divisors (81192494331).

145885961637 is a wasteful number, since it uses less digits than its factorization.

145885961637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795281 (or 795278 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 145885961637 in words is "one hundred forty-five billion, eight hundred eighty-five million, nine hundred sixty-one thousand, six hundred thirty-seven".