10661610651 has 8 divisors (see below), whose sum is σ = 14216118864. Its totient is φ = 7107421440.

The previous prime is 10661610629. The next prime is 10661610677. The reversal of 10661610651 is 15601616601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10661610651 - 2¹⁰ = 10661609627 is a prime.

It is a super-2 number, since 2×10661610651² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10661610691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13971 + ... + 146691.

It is an arithmetic number, because the mean of its divisors is an integer number (1777014858).

Almost surely, 2^10661610651 is an apocalyptic number.

10661610651 is a deficient number, since it is larger than the sum of its proper divisors (3554508213).

10661610651 is a wasteful number, since it uses less digits than its factorization.

10661610651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159501.

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 10661610651 in words is "ten billion, six hundred sixty-one million, six hundred ten thousand, six hundred fifty-one".