651620233623120 has 80 divisors (see below), whose sum is σ = 2021948390145600. Its totient is φ = 173599746952192.

The previous prime is 651620233623083. The next prime is 651620233623131. The reversal of 651620233623120 is 21326332026156.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 1293878034 + ... + 1294381553.

It is an arithmetic number, because the mean of its divisors is an integer number (25274354876820).

Almost surely, 2^{651620233623120} is an apocalyptic number.

651620233623120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

651620233623120 is an abundant number, since it is smaller than the sum of its proper divisors (1370328156522480).

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

651620233623120 is a wasteful number, since it uses less digits than its factorization.

651620233623120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588260652 (or 2588260646 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

Adding to 651620233623120 its reverse (21326332026156), we get a palindrome (672946565649276).

The spelling of 651620233623120 in words is "six hundred fifty-one trillion, six hundred twenty billion, two hundred thirty-three million, six hundred twenty-three thousand, one hundred twenty".