651135630331 has 4 divisors (see below), whose sum is σ = 679445875152. Its totient is φ = 622825385512.

The previous prime is 651135630319. The next prime is 651135630373. The reversal of 651135630331 is 133036531156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 651135630331 - 2²¹ = 651133533179 is a prime.

It is a super-2 number, since 2×651135630331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (651135630031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14155122376 + ... + 14155122421.

It is an arithmetic number, because the mean of its divisors is an integer number (169861468788).

Almost surely, 2^651135630331 is an apocalyptic number.

651135630331 is a deficient number, since it is larger than the sum of its proper divisors (28310244821).

651135630331 is a wasteful number, since it uses less digits than its factorization.

651135630331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28310244820.

The product of its (nonzero) digits is 72900, while the sum is 37.

The spelling of 651135630331 in words is "six hundred fifty-one billion, one hundred thirty-five million, six hundred thirty thousand, three hundred thirty-one".