651555560106 has 24 divisors (see below), whose sum is σ = 1540040415264. Its totient is φ = 197441078760.

The previous prime is 651555560003. The next prime is 651555560143. The reversal of 651555560106 is 601065555156.

651555560106 is a `hidden beast` number, since 65 + 15 + 5 + 5 + 560 + 10 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1645342126 + ... + 1645342521.

It is an arithmetic number, because the mean of its divisors is an integer number (64168350636).

Almost surely, 2^651555560106 is an apocalyptic number.

651555560106 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

651555560106 is an abundant number, since it is smaller than the sum of its proper divisors (888484855158).

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

651555560106 is a wasteful number, since it uses less digits than its factorization.

651555560106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290684666 (or 3290684663 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 651555560106 in words is "six hundred fifty-one billion, five hundred fifty-five million, five hundred sixty thousand, one hundred six".