10215008780 has 24 divisors (see below), whose sum is σ = 21620433408. Its totient is φ = 4053829248.

The previous prime is 10215008777. The next prime is 10215008789. The reversal of 10215008780 is 8780051201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (10215008789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2008289 + ... + 2013368.

It is an arithmetic number, because the mean of its divisors is an integer number (900851392).

Almost surely, 2^10215008780 is an apocalyptic number.

10215008780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10215008780 is an abundant number, since it is smaller than the sum of its proper divisors (11405424628).

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

10215008780 is a wasteful number, since it uses less digits than its factorization.

10215008780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021793 (or 4021791 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

Adding to 10215008780 its reverse (8780051201), we get a palindrome (18995059981).

The spelling of 10215008780 in words is "ten billion, two hundred fifteen million, eight thousand, seven hundred eighty".