515020401628 has 12 divisors (see below), whose sum is σ = 901328729560. Its totient is φ = 257497907472.

The previous prime is 515020401619. The next prime is 515020401647. The reversal of 515020401628 is 826104020515.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 515020401593 and 515020401602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2978751 + ... + 3146902.

Almost surely, 2^515020401628 is an apocalyptic number.

It is an amenable number.

515020401628 is a deficient number, since it is larger than the sum of its proper divisors (386308327932).

515020401628 is a wasteful number, since it uses less digits than its factorization.

515020401628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6146676 (or 6146674 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 515020401628 in words is "five hundred fifteen billion, twenty million, four hundred one thousand, six hundred twenty-eight".