515340450454 has 16 divisors (see below), whose sum is σ = 786272221440. Its totient is φ = 253251484200.

The previous prime is 515340450451. The next prime is 515340450467. The reversal of 515340450454 is 454054043515.

It is a super-2 number, since 2×515340450454² (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 (515340450451) 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, 143167 + ... + 1025269.

It is an arithmetic number, because the mean of its divisors is an integer number (49142013840).

Almost surely, 2^515340450454 is an apocalyptic number.

515340450454 is a deficient number, since it is larger than the sum of its proper divisors (270931770986).

515340450454 is a wasteful number, since it uses less digits than its factorization.

515340450454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887115.

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 515340450454 its reverse (454054043515), we get a palindrome (969394493969).

The spelling of 515340450454 in words is "five hundred fifteen billion, three hundred forty million, four hundred fifty thousand, four hundred fifty-four".