10194640780 has 48 divisors (see below), whose sum is σ = 22295073024. Its totient is φ = 3911362560.

The previous prime is 10194640769. The next prime is 10194640787. The reversal of 10194640780 is 8704649101.

It is not an unprimeable number, because it can be changed into a prime (10194640787) 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, 2697 + ... + 142816.

It is an arithmetic number, because the mean of its divisors is an integer number (464480688).

Almost surely, 2^10194640780 is an apocalyptic number.

10194640780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10194640780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11147536512).

10194640780 is an abundant number, since it is smaller than the sum of its proper divisors (12100432244).

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

10194640780 is a wasteful number, since it uses less digits than its factorization.

10194640780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145666 (or 145664 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 10194640780 in words is "ten billion, one hundred ninety-four million, six hundred forty thousand, seven hundred eighty".