101945678503 has 4 divisors (see below), whose sum is σ = 102218991688. Its totient is φ = 101672365320.

The previous prime is 101945678501. The next prime is 101945678537. The reversal of 101945678503 is 305876549101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305876549101 = 47 ⋅6508011683.

It is a cyclic number.

It is not a de Polignac number, because 101945678503 - 2¹ = 101945678501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101945678501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136656033 + ... + 136656778.

It is an arithmetic number, because the mean of its divisors is an integer number (25554747922).

Almost surely, 2^101945678503 is an apocalyptic number.

101945678503 is a deficient number, since it is larger than the sum of its proper divisors (273313185).

101945678503 is an equidigital number, since it uses as much as digits as its factorization.

101945678503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273313184.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 101945678503 in words is "one hundred one billion, nine hundred forty-five million, six hundred seventy-eight thousand, five hundred three".