10646399777 has 8 divisors (see below), whose sum is σ = 11468995776. Its totient is φ = 9824324112.

The previous prime is 10646399761. The next prime is 10646399807. The reversal of 10646399777 is 77799364601.

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

It is a cyclic number.

It is not a de Polignac number, because 10646399777 - 2⁴ = 10646399761 is a prime.

It is a super-2 number, since 2×10646399777² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10646399077) 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, 87053 + ... + 169914.

It is an arithmetic number, because the mean of its divisors is an integer number (1433624472).

Almost surely, 2^10646399777 is an apocalyptic number.

It is an amenable number.

10646399777 is a deficient number, since it is larger than the sum of its proper divisors (822595999).

10646399777 is a wasteful number, since it uses less digits than its factorization.

10646399777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260167.

The product of its (nonzero) digits is 12002256, while the sum is 59.

The spelling of 10646399777 in words is "ten billion, six hundred forty-six million, three hundred ninety-nine thousand, seven hundred seventy-seven".