145742821475 has 12 divisors (see below), whose sum is σ = 185605453824. Its totient is φ = 113443060320.

The previous prime is 145742821459. The next prime is 145742821493. The reversal of 145742821475 is 574128247541.

It is not a de Polignac number, because 145742821475 - 2⁴ = 145742821459 is a prime.

It is a super-2 number, since 2×145742821475² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

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, 78778979 + ... + 78780828.

It is an arithmetic number, because the mean of its divisors is an integer number (15467121152).

Almost surely, 2^145742821475 is an apocalyptic number.

145742821475 is a deficient number, since it is larger than the sum of its proper divisors (39862632349).

145742821475 is a wasteful number, since it uses less digits than its factorization.

145742821475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157559854 (or 157559849 counting only the distinct ones).

The product of its digits is 2508800, while the sum is 50.

The spelling of 145742821475 in words is "one hundred forty-five billion, seven hundred forty-two million, eight hundred twenty-one thousand, four hundred seventy-five".