551543237949 has 32 divisors (see below), whose sum is σ = 856362101760. Its totient is φ = 312215299200.

The previous prime is 551543237899. The next prime is 551543237953. The reversal of 551543237949 is 949732345155.

It is not a de Polignac number, because 551543237949 - 2³⁶ = 482823761213 is a prime.

It is a super-3 number, since 3×551543237949³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551543237989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6150232 + ... + 6239265.

It is an arithmetic number, because the mean of its divisors is an integer number (26761315680).

Almost surely, 2^551543237949 is an apocalyptic number.

It is an amenable number.

551543237949 is a deficient number, since it is larger than the sum of its proper divisors (304818863811).

551543237949 is a wasteful number, since it uses less digits than its factorization.

551543237949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12389601.

The product of its digits is 20412000, while the sum is 57.

The spelling of 551543237949 in words is "five hundred fifty-one billion, five hundred forty-three million, two hundred thirty-seven thousand, nine hundred forty-nine".