661082412963 has 8 divisors (see below), whose sum is σ = 1007363676928. Its totient is φ = 377761378824.

The previous prime is 661082412901. The next prime is 661082412989. The reversal of 661082412963 is 369214280166.

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

It is not a de Polignac number, because 661082412963 - 2⁶ = 661082412899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (661082412863) 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, 15740057431 + ... + 15740057472.

It is an arithmetic number, because the mean of its divisors is an integer number (125920459616).

Almost surely, 2^661082412963 is an apocalyptic number.

661082412963 is a deficient number, since it is larger than the sum of its proper divisors (346281263965).

661082412963 is a wasteful number, since it uses less digits than its factorization.

661082412963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31480114913.

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 661082412963 in words is "six hundred sixty-one billion, eighty-two million, four hundred twelve thousand, nine hundred sixty-three".