65440156614 has 32 divisors (see below), whose sum is σ = 154402584576. Its totient is φ = 18094052160.

The previous prime is 65440156571. The next prime is 65440156619. The reversal of 65440156614 is 41665104456.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65440156619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25129327 + ... + 25131930.

It is an arithmetic number, because the mean of its divisors is an integer number (4825080768).

Almost surely, 2^65440156614 is an apocalyptic number.

65440156614 is an abundant number, since it is smaller than the sum of its proper divisors (88962427962).

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

65440156614 is a wasteful number, since it uses less digits than its factorization.

65440156614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50261300.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 65440156614 in words is "sixty-five billion, four hundred forty million, one hundred fifty-six thousand, six hundred fourteen".