101954543549 has 16 divisors (see below), whose sum is σ = 105811531200. Its totient is φ = 98174708736.

The previous prime is 101954543531. The next prime is 101954543567. The reversal of 101954543549 is 945345459101.

It is an interprime number because it is at equal distance from previous prime (101954543531) and next prime (101954543567).

It is a cyclic number.

It is not a de Polignac number, because 101954543549 - 2¹⁶ = 101954478013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101954543497 and 101954543506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101954543519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1909277 + ... + 1961949.

It is an arithmetic number, because the mean of its divisors is an integer number (6613220700).

Almost surely, 2^101954543549 is an apocalyptic number.

It is an amenable number.

101954543549 is a deficient number, since it is larger than the sum of its proper divisors (3856987651).

101954543549 is an equidigital number, since it uses as much as digits as its factorization.

101954543549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53404.

The product of its (nonzero) digits is 1944000, while the sum is 50.

The spelling of 101954543549 in words is "one hundred one billion, nine hundred fifty-four million, five hundred forty-three thousand, five hundred forty-nine".