651545545155 has 16 divisors (see below), whose sum is σ = 1042527732480. Its totient is φ = 347472670688.

The previous prime is 651545545153. The next prime is 651545545159. The reversal of 651545545155 is 551545545156.

It is a cyclic number.

It is not a de Polignac number, because 651545545155 - 2¹ = 651545545153 is a prime.

It is a super-2 number, since 2×651545545155² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 651545545098 and 651545545107.

It is not an unprimeable number, because it can be changed into a prime (651545545153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 845895 + ... + 1420784.

It is an arithmetic number, because the mean of its divisors is an integer number (65157983280).

Almost surely, 2^651545545155 is an apocalyptic number.

651545545155 is a deficient number, since it is larger than the sum of its proper divisors (390982187325).

651545545155 is a wasteful number, since it uses less digits than its factorization.

651545545155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285850.

The product of its digits is 7500000, while the sum is 51.

Subtracting from 651545545155 its reverse (551545545156), we obtain a palindrome (99999999999).

The spelling of 651545545155 in words is "six hundred fifty-one billion, five hundred forty-five million, five hundred forty-five thousand, one hundred fifty-five".