661302634032032 has 12 divisors (see below), whose sum is σ = 1301939560750626. Its totient is φ = 330651317016000.

The previous prime is 661302634031989. The next prime is 661302634032137. The reversal of 661302634032032 is 230230436203166.

It can be written as a sum of positive squares in only one way, i.e., 441201791078416 + 220100842953616 = 21004804^2 + 14835796^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10332853656719 + ... + 10332853656782.

Almost surely, 2^{661302634032032} is an apocalyptic number.

It is an amenable number.

661302634032032 is a deficient number, since it is larger than the sum of its proper divisors (640636926718594).

661302634032032 is a wasteful number, since it uses less digits than its factorization.

661302634032032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20665707313511 (or 20665707313503 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 41.

The spelling of 661302634032032 in words is "six hundred sixty-one trillion, three hundred two billion, six hundred thirty-four million, thirty-two thousand, thirty-two".