6991533038 has 16 divisors (see below), whose sum is σ = 11988393984. Its totient is φ = 2995644120.

The previous prime is 6991533023. The next prime is 6991533049. The reversal of 6991533038 is 8303351996.

It is a junction number, because it is equal to n+sod(n) for n = 6991532983 and 6991533001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1331 + ... + 118257.

It is an arithmetic number, because the mean of its divisors is an integer number (749274624).

Almost surely, 2^6991533038 is an apocalyptic number.

6991533038 is a deficient number, since it is larger than the sum of its proper divisors (4996860946).

6991533038 is a wasteful number, since it uses less digits than its factorization.

6991533038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121207.

The product of its (nonzero) digits is 524880, while the sum is 47.

The square root of 6991533038 is about 83615.3875671219. The cubic root of 6991533038 is about 1912.1595994220.

The spelling of 6991533038 in words is "six billion, nine hundred ninety-one million, five hundred thirty-three thousand, thirty-eight".