101420663623 has 2 divisors, whose sum is σ = 101420663624. Its totient is φ = 101420663622.

The previous prime is 101420663581. The next prime is 101420663653. The reversal of 101420663623 is 326366024101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101420663623 is a prime.

It is a super-2 number, since 2×101420663623² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101420663653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50710331811 + 50710331812.

It is an arithmetic number, because the mean of its divisors is an integer number (50710331812).

Almost surely, 2^101420663623 is an apocalyptic number.

101420663623 is a deficient number, since it is larger than the sum of its proper divisors (1).

101420663623 is an equidigital number, since it uses as much as digits as its factorization.

101420663623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 101420663623 its reverse (326366024101), we get a palindrome (427786687724).

The spelling of 101420663623 in words is "one hundred one billion, four hundred twenty million, six hundred sixty-three thousand, six hundred twenty-three".