145636573993 has 4 divisors (see below), whose sum is σ = 145648015488. Its totient is φ = 145625132500.

The previous prime is 145636573949. The next prime is 145636574009. The reversal of 145636573993 is 399375636541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145636573993 - 2¹⁷ = 145636442921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145636573393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5701633 + ... + 5727118.

It is an arithmetic number, because the mean of its divisors is an integer number (36412003872).

Almost surely, 2^145636573993 is an apocalyptic number.

It is an amenable number.

145636573993 is a deficient number, since it is larger than the sum of its proper divisors (11441495).

145636573993 is a wasteful number, since it uses less digits than its factorization.

145636573993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11441494.

The product of its digits is 55112400, while the sum is 61.

The spelling of 145636573993 in words is "one hundred forty-five billion, six hundred thirty-six million, five hundred seventy-three thousand, nine hundred ninety-three".