11678523650 has 24 divisors (see below), whose sum is σ = 21729675060. Its totient is φ = 4669770560.

The previous prime is 11678523613. The next prime is 11678523691. The reversal of 11678523650 is 5632587611.

It can be written as a sum of positive squares in 6 ways, for example, as 4373573689 + 7304949961 = 66133^2 + 85469^2 .

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, 108356 + ... + 187344.

Almost surely, 2^11678523650 is an apocalyptic number.

11678523650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11678523650 is a deficient number, since it is larger than the sum of its proper divisors (10051151410).

11678523650 is a wasteful number, since it uses less digits than its factorization.

11678523650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81958 (or 81953 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 11678523650 in words is "eleven billion, six hundred seventy-eight million, five hundred twenty-three thousand, six hundred fifty".