145663034440 has 64 divisors (see below), whose sum is σ = 408613196160. Its totient is φ = 45401464320.

The previous prime is 145663034393. The next prime is 145663034449. The reversal of 145663034440 is 44430366541.

It is a super-2 number, since 2×145663034440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 145663034393 and 145663034402.

It is not an unprimeable number, because it can be changed into a prime (145663034449) 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, 23643517 + ... + 23649676.

It is an arithmetic number, because the mean of its divisors is an integer number (6384581190).

Almost surely, 2^145663034440 is an apocalyptic number.

145663034440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145663034440 is an abundant number, since it is smaller than the sum of its proper divisors (262950161720).

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

145663034440 is a wasteful number, since it uses less digits than its factorization.

145663034440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47293222 (or 47293218 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 145663034440 in words is "one hundred forty-five billion, six hundred sixty-three million, thirty-four thousand, four hundred forty".