145312045550 has 144 divisors (see below), whose sum is σ = 322827337728. Its totient is φ = 48498609600.

The previous prime is 145312045547. The next prime is 145312045573. The reversal of 145312045550 is 55540213541.

It is a super-2 number, since 2×145312045550² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 145312045550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21990347 + ... + 21996953.

It is an arithmetic number, because the mean of its divisors is an integer number (2241856512).

Almost surely, 2^145312045550 is an apocalyptic number.

145312045550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145312045550 is an abundant number, since it is smaller than the sum of its proper divisors (177515292178).

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

145312045550 is a wasteful number, since it uses less digits than its factorization.

145312045550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6871 (or 6859 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 145312045550 in words is "one hundred forty-five billion, three hundred twelve million, forty-five thousand, five hundred fifty".