65742422655 has 96 divisors (see below), whose sum is σ = 133007422464. Its totient is φ = 27482160384.

The previous prime is 65742422653. The next prime is 65742422659. The reversal of 65742422655 is 55622424756.

It is not a de Polignac number, because 65742422655 - 2¹ = 65742422653 is a prime.

It is a super-2 number, since 2×65742422655² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65742422653) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 990234 + ... + 1054536.

It is an arithmetic number, because the mean of its divisors is an integer number (1385493984).

Almost surely, 2^65742422655 is an apocalyptic number.

65742422655 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65742422655 is an abundant number, since it is smaller than the sum of its proper divisors (67264999809).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65742422655 is a wasteful number, since it uses less digits than its factorization.

65742422655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64445 (or 64438 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 48.

The spelling of 65742422655 in words is "sixty-five billion, seven hundred forty-two million, four hundred twenty-two thousand, six hundred fifty-five".