10100010005978 has 4 divisors (see below), whose sum is σ = 15150015008970. Its totient is φ = 5050005002988.

The previous prime is 10100010005977. The next prime is 10100010006001. The reversal of 10100010005978 is 87950001000101.

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

It can be written as a sum of positive squares in only one way, i.e., 6411140472529 + 3688869533449 = 2532023^2 + 1920643^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10100010005977) 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, 2525002501493 + ... + 2525002501496.

Almost surely, 2^{10100010005978} is an apocalyptic number.

10100010005978 is a deficient number, since it is larger than the sum of its proper divisors (5050005002992).

10100010005978 is an equidigital number, since it uses as much as digits as its factorization.

10100010005978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050005002991.

The product of its (nonzero) digits is 2520, while the sum is 32.

The spelling of 10100010005978 in words is "ten trillion, one hundred billion, ten million, five thousand, nine hundred seventy-eight".