145521021124355 has 16 divisors (see below), whose sum is σ = 178920205478784. Its totient is φ = 113554634219520.

The previous prime is 145521021124279. The next prime is 145521021124361. The reversal of 145521021124355 is 553421120125541.

It is not a de Polignac number, because 145521021124355 - 2¹⁴ = 145521021107971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian 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, 70061819 + ... + 72108948.

It is an arithmetic number, because the mean of its divisors is an integer number (11182512842424).

Almost surely, 2^{145521021124355} is an apocalyptic number.

145521021124355 is a deficient number, since it is larger than the sum of its proper divisors (33399184354429).

145521021124355 is a wasteful number, since it uses less digits than its factorization.

145521021124355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142175806.

The product of its (nonzero) digits is 240000, while the sum is 41.

Adding to 145521021124355 its reverse (553421120125541), we get a palindrome (698942141249896).

The spelling of 145521021124355 in words is "one hundred forty-five trillion, five hundred twenty-one billion, twenty-one million, one hundred twenty-four thousand, three hundred fifty-five".