145986953505 has 16 divisors (see below), whose sum is σ = 233583903744. Its totient is φ = 77858115840.

The previous prime is 145986953479. The next prime is 145986953509. The reversal of 145986953505 is 505359689541.

It is not a de Polignac number, because 145986953505 - 2³⁷ = 8548000033 is a prime.

It is a super-3 number, since 3×145986953505³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (145986953509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1237440 + ... + 1350270.

It is an arithmetic number, because the mean of its divisors is an integer number (14598993984).

Almost surely, 2^145986953505 is an apocalyptic number.

145986953505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145986953505 is a deficient number, since it is larger than the sum of its proper divisors (87596950239).

145986953505 is a wasteful number, since it uses less digits than its factorization.

145986953505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199096.

The product of its (nonzero) digits is 29160000, while the sum is 60.

The spelling of 145986953505 in words is "one hundred forty-five billion, nine hundred eighty-six million, nine hundred fifty-three thousand, five hundred five".