651255456016 has 45 divisors (see below), whose sum is σ = 1387020998629. Its totient is φ = 296009067200.

The previous prime is 651255456013. The next prime is 651255456037. The reversal of 651255456016 is 610654552156.

It is a happy number.

The square root of 651255456016 is 807004.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 66458777616 + 584796678400 = 257796^2 + 764720^2 .

It is a super-2 number, since 2×651255456016² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (651255456013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 35499006 + ... + 35517346.

Almost surely, 2^651255456016 is an apocalyptic number.

651255456016 is the 807004-th square number.

It is an amenable number.

651255456016 is an abundant number, since it is smaller than the sum of its proper divisors (735765542613).

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

651255456016 is an frugal number, since it uses more digits than its factorization.

651255456016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36712 (or 18354 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 651255456016 in words is "six hundred fifty-one billion, two hundred fifty-five million, four hundred fifty-six thousand, sixteen".