511206421560 has 128 divisors (see below), whose sum is σ = 1597917888000. Its totient is φ = 130673926656.

The previous prime is 511206421513. The next prime is 511206421567. The reversal of 511206421560 is 65124602115.

It is a super-2 number, since 2×511206421560² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511206421567) 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 31 ways as a sum of consecutive naturals, for example, 44692 + ... + 1012131.

It is an arithmetic number, because the mean of its divisors is an integer number (12483733500).

Almost surely, 2^511206421560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511206421560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798958944000).

511206421560 is an abundant number, since it is smaller than the sum of its proper divisors (1086711466440).

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

511206421560 is a wasteful number, since it uses less digits than its factorization.

511206421560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057005 (or 1057001 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 511206421560 in words is "five hundred eleven billion, two hundred six million, four hundred twenty-one thousand, five hundred sixty".