145303021431522 has 24 divisors (see below), whose sum is σ = 316197986966940. Its totient is φ = 48222836805600.

The previous prime is 145303021431493. The next prime is 145303021431559. The reversal of 145303021431522 is 225134120303541.

145303021431522 is a `hidden beast` number, since 1 + 4 + 5 + 3 + 0 + 302 + 14 + 315 + 22 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 107499965231961 + 37803056199561 = 10368219^2 + 6148419^2 .

It is a super-3 number, since 3×145303021431522³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17625301729 + ... + 17625309972.

Almost surely, 2^{145303021431522} is an apocalyptic number.

145303021431522 is an abundant number, since it is smaller than the sum of its proper divisors (170894965535418).

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

145303021431522 is a wasteful number, since it uses less digits than its factorization.

145303021431522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35250611938 (or 35250611935 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 145303021431522 in words is "one hundred forty-five trillion, three hundred three billion, twenty-one million, four hundred thirty-one thousand, five hundred twenty-two".