10001010978 has 64 divisors (see below), whose sum is σ = 26085899520. Its totient is φ = 2780199936.

The previous prime is 10001010919. The next prime is 10001010979. The reversal of 10001010978 is 87901010001.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10001010979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 343551 + ... + 371522.

It is an arithmetic number, because the mean of its divisors is an integer number (407592180).

Almost surely, 2^10001010978 is an apocalyptic number.

10001010978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10001010978 is an abundant number, since it is smaller than the sum of its proper divisors (16084888542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10001010978 is a wasteful number, since it uses less digits than its factorization.

10001010978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715128 (or 715122 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

Adding to 10001010978 its reverse (87901010001), we get a palindrome (97902020979).

The spelling of 10001010978 in words is "ten billion, one million, ten thousand, nine hundred seventy-eight".