1555105400032 has 24 divisors (see below), whose sum is σ = 3061642443552. Its totient is φ = 777545414400.

The previous prime is 1555105399993. The next prime is 1555105400033. The reversal of 1555105400032 is 2300045015551.

It is a junction number, because it is equal to n+sod(n) for n = 1555105399967 and 1555105400003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555105400033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5322057 + ... + 5606647.

It is an arithmetic number, because the mean of its divisors is an integer number (127568435148).

Almost surely, 2^{1555105400032} is an apocalyptic number.

It is an amenable number.

1555105400032 is a deficient number, since it is larger than the sum of its proper divisors (1506537043520).

1555105400032 is a wasteful number, since it uses less digits than its factorization.

1555105400032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455362 (or 455354 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 1555105400032 in words is "one trillion, five hundred fifty-five billion, one hundred five million, four hundred thousand, thirty-two".