145387740272 has 80 divisors (see below), whose sum is σ = 305068902912. Its totient is φ = 66860006400.

The previous prime is 145387740263. The next prime is 145387740341. The reversal of 145387740272 is 272047783541.

It is a super-2 number, since 2×145387740272² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145387740272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8723147 + ... + 8739797.

Almost surely, 2^145387740272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145387740272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152534451456).

145387740272 is an abundant number, since it is smaller than the sum of its proper divisors (159681162640).

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

145387740272 is a wasteful number, since it uses less digits than its factorization.

145387740272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17406 (or 17400 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 50.

The spelling of 145387740272 in words is "one hundred forty-five billion, three hundred eighty-seven million, seven hundred forty thousand, two hundred seventy-two".