101945678501 has 2 divisors, whose sum is σ = 101945678502. Its totient is φ = 101945678500.

The previous prime is 101945678479. The next prime is 101945678537. The reversal of 101945678501 is 105876549101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101889278401 + 56400100 = 319201^2 + 7510^2 .

It is a cyclic number.

It is not a de Polignac number, because 101945678501 - 2¹⁸ = 101945416357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101945668501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50972839250 + 50972839251.

It is an arithmetic number, because the mean of its divisors is an integer number (50972839251).

Almost surely, 2^101945678501 is an apocalyptic number.

It is an amenable number.

101945678501 is a deficient number, since it is larger than the sum of its proper divisors (1).

101945678501 is an equidigital number, since it uses as much as digits as its factorization.

101945678501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 47.

The spelling of 101945678501 in words is "one hundred one billion, nine hundred forty-five million, six hundred seventy-eight thousand, five hundred one".