145073921686 has 16 divisors (see below), whose sum is σ = 219153765600. Its totient is φ = 72023758848.

The previous prime is 145073921647. The next prime is 145073921687. The reversal of 145073921686 is 686129370541.

It is a super-2 number, since 2×145073921686² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145073921687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6546 + ... + 538693.

It is an arithmetic number, because the mean of its divisors is an integer number (13697110350).

It is a 1-persistent number, because it is pandigital, but 2⋅145073921686 = 290147843372 is not.

Almost surely, 2^145073921686 is an apocalyptic number.

145073921686 is a deficient number, since it is larger than the sum of its proper divisors (74079843914).

145073921686 is a wasteful number, since it uses less digits than its factorization.

145073921686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546183.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 145073921686 in words is "one hundred forty-five billion, seventy-three million, nine hundred twenty-one thousand, six hundred eighty-six".