5551511103432 has 288 divisors, whose sum is σ = 17600564175480. Its totient is φ = 1576159119360.

The previous prime is 5551511103431. The next prime is 5551511103533. The reversal of 5551511103432 is 2343011151555.

5551511103432 is a `hidden beast` number, since 5 + 5 + 5 + 1 + 511 + 103 + 4 + 32 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5408722343556 + 142788759876 = 2325666^2 + 377874^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (5551511103431) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 369772758 + ... + 369787770.

Almost surely, 2^{5551511103432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5551511103432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8800282087740).

5551511103432 is an abundant number, since it is smaller than the sum of its proper divisors (12049053072048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5551511103432 is a wasteful number, since it uses less digits than its factorization.

5551511103432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15693 (or 15679 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

Adding to 5551511103432 its reverse (2343011151555), we get a palindrome (7894522254987).

The spelling of 5551511103432 in words is "five trillion, five hundred fifty-one billion, five hundred eleven million, one hundred three thousand, four hundred thirty-two".