65551015560 has 64 divisors (see below), whose sum is σ = 198067867200. Its totient is φ = 17354509056.

The previous prime is 65551015549. The next prime is 65551015571. The reversal of 65551015560 is 6551015556.

It is an interprime number because it is at equal distance from previous prime (65551015549) and next prime (65551015571).

It is a super-2 number, since 2×65551015560² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1948279 + ... + 1981638.

It is an arithmetic number, because the mean of its divisors is an integer number (3094810425).

Almost surely, 2^65551015560 is an apocalyptic number.

65551015560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65551015560 is an abundant number, since it is smaller than the sum of its proper divisors (132516851640).

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

65551015560 is a wasteful number, since it uses less digits than its factorization.

65551015560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930070 (or 3930066 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 65551015560 in words is "sixty-five billion, five hundred fifty-one million, fifteen thousand, five hundred sixty".