511031550206442 has 128 divisors (see below), whose sum is σ = 1071625465036800. Its totient is φ = 162157151572416.

The previous prime is 511031550206423. The next prime is 511031550206467. The reversal of 511031550206442 is 244602055130115.

It is a super-2 number, since 2×511031550206442² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 511031550206442.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36092340559 + ... + 36092354717.

It is an arithmetic number, because the mean of its divisors is an integer number (8372073945600).

Almost surely, 2^{511031550206442} is an apocalyptic number.

511031550206442 is an abundant number, since it is smaller than the sum of its proper divisors (560593914830358).

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

511031550206442 is a wasteful number, since it uses less digits than its factorization.

511031550206442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16120.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 511031550206442 in words is "five hundred eleven trillion, thirty-one billion, five hundred fifty million, two hundred six thousand, four hundred forty-two".