65942726390 has 64 divisors (see below), whose sum is σ = 126764352000. Its totient is φ = 24626638080.

The previous prime is 65942726329. The next prime is 65942726407. The reversal of 65942726390 is 9362724956.

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 5252741 + ... + 5265279.

It is an arithmetic number, because the mean of its divisors is an integer number (1980693000).

Almost surely, 2^65942726390 is an apocalyptic number.

65942726390 is a deficient number, since it is larger than the sum of its proper divisors (60821625610).

65942726390 is a wasteful number, since it uses less digits than its factorization.

65942726390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12965.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 65942726390 in words is "sixty-five billion, nine hundred forty-two million, seven hundred twenty-six thousand, three hundred ninety".