11939780610 has 24 divisors (see below), whose sum is σ = 31043429820. Its totient is φ = 3183941472.

The previous prime is 11939780581. The next prime is 11939780621. The reversal of 11939780610 is 1608793911.

It can be written as a sum of positive squares in 2 ways, for example, as 10828691721 + 1111088889 = 104061^2 + 33333^2 .

It is a super-2 number, since 2×11939780610² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66332025 + ... + 66332204.

Almost surely, 2^11939780610 is an apocalyptic number.

11939780610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11939780610 is an abundant number, since it is smaller than the sum of its proper divisors (19103649210).

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

11939780610 is a wasteful number, since it uses less digits than its factorization.

11939780610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132664242 (or 132664239 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The spelling of 11939780610 in words is "eleven billion, nine hundred thirty-nine million, seven hundred eighty thousand, six hundred ten".