10621143542137 has 2 divisors, whose sum is σ = 10621143542138. Its totient is φ = 10621143542136.

The previous prime is 10621143542063. The next prime is 10621143542147. The reversal of 10621143542137 is 73124534112601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7529651248441 + 3091492293696 = 2744021^2 + 1758264^2 .

It is an emirp because it is prime and its reverse (73124534112601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10621143542137 - 2³⁹ = 10071387728249 is a prime.

It is a super-2 number, since 2×10621143542137² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10621143542137.

It is not a weakly prime, because it can be changed into another prime (10621143542147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5310571771068 + 5310571771069.

It is an arithmetic number, because the mean of its divisors is an integer number (5310571771069).

Almost surely, 2^{10621143542137} is an apocalyptic number.

It is an amenable number.

10621143542137 is a deficient number, since it is larger than the sum of its proper divisors (1).

10621143542137 is an equidigital number, since it uses as much as digits as its factorization.

10621143542137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

Adding to 10621143542137 its reverse (73124534112601), we get a palindrome (83745677654738).

The spelling of 10621143542137 in words is "ten trillion, six hundred twenty-one billion, one hundred forty-three million, five hundred forty-two thousand, one hundred thirty-seven".