1551555141140 has 48 divisors (see below), whose sum is σ = 3450674812032. Its totient is φ = 584778201216.

The previous prime is 1551555141127. The next prime is 1551555141181. The reversal of 1551555141140 is 411415551551.

It is a junction number, because it is equal to n+sod(n) for n = 1551555141094 and 1551555141103.

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, 25140419 + ... + 25202058.

It is an arithmetic number, because the mean of its divisors is an integer number (71889058584).

Almost surely, 2^{1551555141140} is an apocalyptic number.

1551555141140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1551555141140 is an abundant number, since it is smaller than the sum of its proper divisors (1899119670892).

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

1551555141140 is a wasteful number, since it uses less digits than its factorization.

1551555141140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50342576 (or 50342574 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 38.

The spelling of 1551555141140 in words is "one trillion, five hundred fifty-one billion, five hundred fifty-five million, one hundred forty-one thousand, one hundred forty".