651244131556 has 24 divisors (see below), whose sum is σ = 1206288224960. Its totient is φ = 306779724000.

The previous prime is 651244131529. The next prime is 651244131563. The reversal of 651244131556 is 655131442156.

It is a super-2 number, since 2×651244131556² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23657520 + ... + 23685031.

Almost surely, 2^651244131556 is an apocalyptic number.

It is an amenable number.

651244131556 is a deficient number, since it is larger than the sum of its proper divisors (555044093404).

651244131556 is a wasteful number, since it uses less digits than its factorization.

651244131556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47342755 (or 47342753 counting only the distinct ones).

The product of its digits is 432000, while the sum is 43.

The spelling of 651244131556 in words is "six hundred fifty-one billion, two hundred forty-four million, one hundred thirty-one thousand, five hundred fifty-six".