6511620750340 has 24 divisors (see below), whose sum is σ = 13756286238912. Its totient is φ = 2589051602400.

The previous prime is 6511620750317. The next prime is 6511620750347. The reversal of 6511620750340 is 430570261156.

It is a super-2 number, since 2×6511620750340² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6511620750293 and 6511620750302.

It is not an unprimeable number, because it can be changed into a prime (6511620750347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974790186 + ... + 974796865.

It is an arithmetic number, because the mean of its divisors is an integer number (573178593288).

Almost surely, 2^{6511620750340} is an apocalyptic number.

It is an amenable number.

6511620750340 is an abundant number, since it is smaller than the sum of its proper divisors (7244665488572).

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

6511620750340 is a wasteful number, since it uses less digits than its factorization.

6511620750340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949587227 (or 1949587225 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 6511620750340 in words is "six trillion, five hundred eleven billion, six hundred twenty million, seven hundred fifty thousand, three hundred forty".