551747159649 has 48 divisors (see below), whose sum is σ = 951765534720. Its totient is φ = 312877216080.

The previous prime is 551747159633. The next prime is 551747159653. The reversal of 551747159649 is 946951747155.

551747159649 is a `hidden beast` number, since 5 + 51 + 7 + 471 + 59 + 64 + 9 = 666.

It is not a de Polignac number, because 551747159649 - 2⁴ = 551747159633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (551747159749) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1015209 + ... + 1460870.

It is an arithmetic number, because the mean of its divisors is an integer number (19828448640).

Almost surely, 2^551747159649 is an apocalyptic number.

It is an amenable number.

551747159649 is a deficient number, since it is larger than the sum of its proper divisors (400018375071).

551747159649 is a wasteful number, since it uses less digits than its factorization.

551747159649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476232 (or 2476220 counting only the distinct ones).

The product of its digits is 47628000, while the sum is 63.

The spelling of 551747159649 in words is "five hundred fifty-one billion, seven hundred forty-seven million, one hundred fifty-nine thousand, six hundred forty-nine".