29770647650 has 12 divisors (see below), whose sum is σ = 55373404722. Its totient is φ = 11908259040.

The previous prime is 29770647623. The next prime is 29770647659. The reversal of 29770647650 is 5674607792.

It can be written as a sum of positive squares in 3 ways, for example, as 23826083449 + 5944564201 = 154357^2 + 77101^2 .

It is a junction number, because it is equal to n+sod(n) for n = 29770647592 and 29770647601.

It is not an unprimeable number, because it can be changed into a prime (29770647659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 297706427 + ... + 297706526.

Almost surely, 2^29770647650 is an apocalyptic number.

29770647650 is a deficient number, since it is larger than the sum of its proper divisors (25602757072).

29770647650 is a wasteful number, since it uses less digits than its factorization.

29770647650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595412965 (or 595412960 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 53.

The spelling of 29770647650 in words is "twenty-nine billion, seven hundred seventy million, six hundred forty-seven thousand, six hundred fifty".