145679501943578 has 4 divisors (see below), whose sum is σ = 218519252915370. Its totient is φ = 72839750971788.

The previous prime is 145679501943491. The next prime is 145679501943589. The reversal of 145679501943578 is 875349105976541.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 145638868656649 + 40633286929 = 12068093^2 + 201577^2 .

It is a super-3 number, since 3×145679501943578³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36419875485893 + ... + 36419875485896.

Almost surely, 2^{145679501943578} is an apocalyptic number.

145679501943578 is a deficient number, since it is larger than the sum of its proper divisors (72839750971792).

145679501943578 is an equidigital number, since it uses as much as digits as its factorization.

145679501943578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72839750971791.

The product of its (nonzero) digits is 1143072000, while the sum is 74.

The spelling of 145679501943578 in words is "one hundred forty-five trillion, six hundred seventy-nine billion, five hundred one million, nine hundred forty-three thousand, five hundred seventy-eight".