145604064731 has 2 divisors, whose sum is σ = 145604064732. Its totient is φ = 145604064730.

The previous prime is 145604064689. The next prime is 145604064769. The reversal of 145604064731 is 137460406541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145604064731 - 2¹⁴ = 145604048347 is a prime.

It is a super-2 number, since 2×145604064731² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (145604067731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72802032365 + 72802032366.

It is an arithmetic number, because the mean of its divisors is an integer number (72802032366).

Almost surely, 2^145604064731 is an apocalyptic number.

145604064731 is a deficient number, since it is larger than the sum of its proper divisors (1).

145604064731 is an equidigital number, since it uses as much as digits as its factorization.

145604064731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 145604064731 in words is "one hundred forty-five billion, six hundred four million, sixty-four thousand, seven hundred thirty-one".