145204015478 has 4 divisors (see below), whose sum is σ = 217806023220. Its totient is φ = 72602007738.

The previous prime is 145204015477. The next prime is 145204015483. The reversal of 145204015478 is 874510402541.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×145204015478² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145204015477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36301003868 + ... + 36301003871.

It is an arithmetic number, because the mean of its divisors is an integer number (54451505805).

Almost surely, 2^145204015478 is an apocalyptic number.

145204015478 is a deficient number, since it is larger than the sum of its proper divisors (72602007742).

145204015478 is an equidigital number, since it uses as much as digits as its factorization.

145204015478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72602007741.

The product of its (nonzero) digits is 179200, while the sum is 41.

The spelling of 145204015478 in words is "one hundred forty-five billion, two hundred four million, fifteen thousand, four hundred seventy-eight".