145427739861 has 16 divisors (see below), whose sum is σ = 207616608000. Its totient is φ = 90223507968.

The previous prime is 145427739841. The next prime is 145427739869. The reversal of 145427739861 is 168937724541.

145427739861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145427739861 - 2⁶ = 145427739797 is a prime.

It is a super-2 number, since 2×145427739861² (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 (145427739869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16015261 + ... + 16024338.

It is an arithmetic number, because the mean of its divisors is an integer number (12976038000).

Almost surely, 2^145427739861 is an apocalyptic number.

It is an amenable number.

145427739861 is a deficient number, since it is larger than the sum of its proper divisors (62188868139).

145427739861 is a wasteful number, since it uses less digits than its factorization.

145427739861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32039708.

The product of its digits is 10160640, while the sum is 57.

The spelling of 145427739861 in words is "one hundred forty-five billion, four hundred twenty-seven million, seven hundred thirty-nine thousand, eight hundred sixty-one".