145011431550 has 48 divisors (see below), whose sum is σ = 375264374400. Its totient is φ = 36988422240.

The previous prime is 145011431531. The next prime is 145011431557. The reversal of 145011431550 is 55134110541.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145011431557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21012700 + ... + 21019599.

It is an arithmetic number, because the mean of its divisors is an integer number (7818007800).

Almost surely, 2^145011431550 is an apocalyptic number.

145011431550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145011431550 is an abundant number, since it is smaller than the sum of its proper divisors (230252942850).

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

145011431550 is a wasteful number, since it uses less digits than its factorization.

145011431550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42032337 (or 42032332 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 145011431550 in words is "one hundred forty-five billion, eleven million, four hundred thirty-one thousand, five hundred fifty".