511336451242 has 16 divisors (see below), whose sum is σ = 785930031432. Its totient is φ = 249363233280.

The previous prime is 511336451221. The next prime is 511336451291. The reversal of 511336451242 is 242154633115.

It can be written as a sum of positive squares in 4 ways, for example, as 31113784881 + 480222666361 = 176391^2 + 692981^2 .

It is a super-2 number, since 2×511336451242² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566703 + ... + 1159234.

Almost surely, 2^511336451242 is an apocalyptic number.

511336451242 is a deficient number, since it is larger than the sum of its proper divisors (274593580190).

511336451242 is a wasteful number, since it uses less digits than its factorization.

511336451242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729593.

The product of its digits is 86400, while the sum is 37.

It can be divided in two parts, 511336 and 451242, that added together give a triangular number (962578 = T₁₃₈₇).

The spelling of 511336451242 in words is "five hundred eleven billion, three hundred thirty-six million, four hundred fifty-one thousand, two hundred forty-two".