101583049387 has 4 divisors (see below), whose sum is σ = 101585886480. Its totient is φ = 101580212296.

The previous prime is 101583049369. The next prime is 101583049427. The reversal of 101583049387 is 783940385101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101583049387 - 2⁷ = 101583049259 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101583049387.

It is not an unprimeable number, because it can be changed into a prime (101583049327) 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, 1364143 + ... + 1436680.

It is an arithmetic number, because the mean of its divisors is an integer number (25396471620).

Almost surely, 2^101583049387 is an apocalyptic number.

101583049387 is a deficient number, since it is larger than the sum of its proper divisors (2837093).

101583049387 is an equidigital number, since it uses as much as digits as its factorization.

101583049387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837092.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 101583049387 in words is "one hundred one billion, five hundred eighty-three million, forty-nine thousand, three hundred eighty-seven".