66332637995 has 16 divisors (see below), whose sum is σ = 87127465152. Its totient is φ = 48181080960.

The previous prime is 66332637983. The next prime is 66332638007. The reversal of 66332637995 is 59973623366.

It is an interprime number because it is at equal distance from previous prime (66332637983) and next prime (66332638007).

It is not a de Polignac number, because 66332637995 - 2¹⁰ = 66332636971 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8360807 + ... + 8368736.

It is an arithmetic number, because the mean of its divisors is an integer number (5445466572).

Almost surely, 2^66332637995 is an apocalyptic number.

66332637995 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66332637995 is a deficient number, since it is larger than the sum of its proper divisors (20794827157).

66332637995 is a wasteful number, since it uses less digits than its factorization.

66332637995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16729622.

The product of its digits is 33067440, while the sum is 59.

The spelling of 66332637995 in words is "sixty-six billion, three hundred thirty-two million, six hundred thirty-seven thousand, nine hundred ninety-five".