145477990523 has 2 divisors, whose sum is σ = 145477990524. Its totient is φ = 145477990522.

The previous prime is 145477990381. The next prime is 145477990531. The reversal of 145477990523 is 325099774541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145477990523 is a prime.

It is a super-2 number, since 2×145477990523² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145477990543) 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, 72738995261 + 72738995262.

It is an arithmetic number, because the mean of its divisors is an integer number (72738995262).

Almost surely, 2^145477990523 is an apocalyptic number.

145477990523 is a deficient number, since it is larger than the sum of its proper divisors (1).

145477990523 is an equidigital number, since it uses as much as digits as its factorization.

145477990523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9525600, while the sum is 56.

The spelling of 145477990523 in words is "one hundred forty-five billion, four hundred seventy-seven million, nine hundred ninety thousand, five hundred twenty-three".