20361264662 has 4 divisors (see below), whose sum is σ = 30541896996. Its totient is φ = 10180632330.

The previous prime is 20361264661. The next prime is 20361264673. The reversal of 20361264662 is 26646216302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26646216302 = 2 ⋅13323108151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20361264661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5090316164 + ... + 5090316167.

It is an arithmetic number, because the mean of its divisors is an integer number (7635474249).

Almost surely, 2^20361264662 is an apocalyptic number.

20361264662 is a deficient number, since it is larger than the sum of its proper divisors (10180632334).

20361264662 is a wasteful number, since it uses less digits than its factorization.

20361264662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10180632333.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 20361264662 in words is "twenty billion, three hundred sixty-one million, two hundred sixty-four thousand, six hundred sixty-two".