551611551615 has 16 divisors (see below), whose sum is σ = 882592175616. Its totient is φ = 294188263200.

The previous prime is 551611551607. The next prime is 551611551629. The reversal of 551611551615 is 516155116155.

It is not a de Polignac number, because 551611551615 - 2³ = 551611551607 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 862830 + ... + 1359300.

It is an arithmetic number, because the mean of its divisors is an integer number (55162010976).

Almost surely, 2^551611551615 is an apocalyptic number.

551611551615 is a deficient number, since it is larger than the sum of its proper divisors (330980624001).

551611551615 is a wasteful number, since it uses less digits than its factorization.

551611551615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570550.

The product of its digits is 112500, while the sum is 42.

The spelling of 551611551615 in words is "five hundred fifty-one billion, six hundred eleven million, five hundred fifty-one thousand, six hundred fifteen".