642612662150 has 12 divisors (see below), whose sum is σ = 1195259551692. Its totient is φ = 257045064840.

The previous prime is 642612662147. The next prime is 642612662179. The reversal of 642612662150 is 51266216246.

It is a junction number, because it is equal to n+sod(n) for n = 642612662098 and 642612662107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6426126572 + ... + 6426126671.

It is an arithmetic number, because the mean of its divisors is an integer number (99604962641).

Almost surely, 2^642612662150 is an apocalyptic number.

642612662150 is a deficient number, since it is larger than the sum of its proper divisors (552646889542).

642612662150 is a wasteful number, since it uses less digits than its factorization.

642612662150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12852253255 (or 12852253250 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

Adding to 642612662150 its reverse (51266216246), we get a palindrome (693878878396).

The spelling of 642612662150 in words is "six hundred forty-two billion, six hundred twelve million, six hundred sixty-two thousand, one hundred fifty".