145989953540 has 48 divisors (see below), whose sum is σ = 325021799424. Its totient is φ = 54984873600.

The previous prime is 145989953477. The next prime is 145989953569. The reversal of 145989953540 is 45359989541.

145989953540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145989953540² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is an unprimeable number.

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, 3159056 + ... + 3204935.

It is an arithmetic number, because the mean of its divisors is an integer number (6771287488).

Almost surely, 2^145989953540 is an apocalyptic number.

145989953540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145989953540 is an abundant number, since it is smaller than the sum of its proper divisors (179031845884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145989953540 is a wasteful number, since it uses less digits than its factorization.

145989953540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6364068 (or 6364066 counting only the distinct ones).

The product of its (nonzero) digits is 34992000, while the sum is 62.

The spelling of 145989953540 in words is "one hundred forty-five billion, nine hundred eighty-nine million, nine hundred fifty-three thousand, five hundred forty".