651161151550 has 96 divisors (see below), whose sum is σ = 1578344104512. Its totient is φ = 193959290880.

The previous prime is 651161151541. The next prime is 651161151581. The reversal of 651161151550 is 55151161156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4131837 + ... + 4286536.

It is an arithmetic number, because the mean of its divisors is an integer number (16441084422).

Almost surely, 2^651161151550 is an apocalyptic number.

651161151550 is an abundant number, since it is smaller than the sum of its proper divisors (927182952962).

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

651161151550 is a wasteful number, since it uses less digits than its factorization.

651161151550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8418422 (or 8418417 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 37.

The spelling of 651161151550 in words is "six hundred fifty-one billion, one hundred sixty-one million, one hundred fifty-one thousand, five hundred fifty".