42544510501 has 2 divisors, whose sum is σ = 42544510502. Its totient is φ = 42544510500.

The previous prime is 42544510433. The next prime is 42544510507. The reversal of 42544510501 is 10501544524.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31399485601 + 11145024900 = 177199^2 + 105570^2 .

It is a cyclic number.

It is not a de Polignac number, because 42544510501 - 2⁷ = 42544510373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42544510507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21272255250 + 21272255251.

It is an arithmetic number, because the mean of its divisors is an integer number (21272255251).

Almost surely, 2^42544510501 is an apocalyptic number.

It is an amenable number.

42544510501 is a deficient number, since it is larger than the sum of its proper divisors (1).

42544510501 is an equidigital number, since it uses as much as digits as its factorization.

42544510501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 42544510501 in words is "forty-two billion, five hundred forty-four million, five hundred ten thousand, five hundred one".