651635620662 has 48 divisors (see below), whose sum is σ = 1424784401712. Its totient is φ = 197510575680.

The previous prime is 651635620633. The next prime is 651635620663. The reversal of 651635620662 is 266026536156.

It is a super-2 number, since 2×651635620662² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651635620663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 580389 + ... + 1280672.

It is an arithmetic number, because the mean of its divisors is an integer number (29683008369).

Almost surely, 2^651635620662 is an apocalyptic number.

651635620662 is an abundant number, since it is smaller than the sum of its proper divisors (773148781050).

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

651635620662 is a wasteful number, since it uses less digits than its factorization.

651635620662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861213 (or 1861146 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 651635620662 in words is "six hundred fifty-one billion, six hundred thirty-five million, six hundred twenty thousand, six hundred sixty-two".