101780250623 has 2 divisors, whose sum is σ = 101780250624. Its totient is φ = 101780250622.

The previous prime is 101780250599. The next prime is 101780250653. The reversal of 101780250623 is 326052087101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101780250623 - 2²⁰ = 101779202047 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101780250653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50890125311 + 50890125312.

It is an arithmetic number, because the mean of its divisors is an integer number (50890125312).

Almost surely, 2^101780250623 is an apocalyptic number.

101780250623 is a deficient number, since it is larger than the sum of its proper divisors (1).

101780250623 is an equidigital number, since it uses as much as digits as its factorization.

101780250623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 101780250623 in words is "one hundred one billion, seven hundred eighty million, two hundred fifty thousand, six hundred twenty-three".