145017247641640 has 128 divisors (see below), whose sum is σ = 365456287969920. Its totient is φ = 51331223756800.

The previous prime is 145017247641631. The next prime is 145017247641653. The reversal of 145017247641640 is 46146742710541.

It is a super-2 number, since 2×145017247641640² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1081249 + ... + 17064688.

It is an arithmetic number, because the mean of its divisors is an integer number (2855127249765).

Almost surely, 2^{145017247641640} is an apocalyptic number.

145017247641640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145017247641640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182728143984960).

145017247641640 is an abundant number, since it is smaller than the sum of its proper divisors (220439040328280).

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

145017247641640 is a wasteful number, since it uses less digits than its factorization.

145017247641640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18146443 (or 18146439 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 145017247641640 in words is "one hundred forty-five trillion, seventeen billion, two hundred forty-seven million, six hundred forty-one thousand, six hundred forty".