145769553979 has 16 divisors (see below), whose sum is σ = 171486963648. Its totient is φ = 121324050432.

The previous prime is 145769553971. The next prime is 145769554001. The reversal of 145769553979 is 979355967541.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 145769553979 - 2³ = 145769553971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145769553971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1989322 + ... + 2061295.

It is an arithmetic number, because the mean of its divisors is an integer number (10717935228).

Almost surely, 2^145769553979 is an apocalyptic number.

145769553979 is a deficient number, since it is larger than the sum of its proper divisors (25717409669).

145769553979 is an equidigital number, since it uses as much as digits as its factorization.

145769553979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4050774.

The product of its digits is 321489000, while the sum is 70.

The spelling of 145769553979 in words is "one hundred forty-five billion, seven hundred sixty-nine million, five hundred fifty-three thousand, nine hundred seventy-nine".