1556553156340 has 96 divisors (see below), whose sum is σ = 4152868521984. Its totient is φ = 476732321280.

The previous prime is 1556553156317. The next prime is 1556553156461. The reversal of 1556553156340 is 436513556551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13737919 + ... + 13850758.

It is an arithmetic number, because the mean of its divisors is an integer number (43259047104).

Almost surely, 2^{1556553156340} is an apocalyptic number.

1556553156340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1556553156340 is an abundant number, since it is smaller than the sum of its proper divisors (2596315365644).

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

1556553156340 is a wasteful number, since it uses less digits than its factorization.

1556553156340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27588737 (or 27588735 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 49.

The spelling of 1556553156340 in words is "one trillion, five hundred fifty-six billion, five hundred fifty-three million, one hundred fifty-six thousand, three hundred forty".