140202020551 has 2 divisors, whose sum is σ = 140202020552. Its totient is φ = 140202020550.

The previous prime is 140202020549. The next prime is 140202020561. The reversal of 140202020551 is 155020202041.

It is a weak prime.

It is an emirp because it is prime and its reverse (155020202041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140202020551 - 2¹ = 140202020549 is a prime.

Together with 140202020549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140202020561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70101010275 + 70101010276.

It is an arithmetic number, because the mean of its divisors is an integer number (70101010276).

Almost surely, 2^140202020551 is an apocalyptic number.

140202020551 is a deficient number, since it is larger than the sum of its proper divisors (1).

140202020551 is an equidigital number, since it uses as much as digits as its factorization.

140202020551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 140202020551 its reverse (155020202041), we get a palindrome (295222222592).

The spelling of 140202020551 in words is "one hundred forty billion, two hundred two million, twenty thousand, five hundred fifty-one".