1555412861401 has 8 divisors (see below), whose sum is σ = 1777862093760. Its totient is φ = 1333025477808.

The previous prime is 1555412861369. The next prime is 1555412861449. The reversal of 1555412861401 is 1041682145551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1555412861401 - 2⁵ = 1555412861369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1555412861491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15408286 + ... + 15508903.

It is an arithmetic number, because the mean of its divisors is an integer number (222232761720).

Almost surely, 2^{1555412861401} is an apocalyptic number.

It is an amenable number.

1555412861401 is a deficient number, since it is larger than the sum of its proper divisors (222449232359).

1555412861401 is an equidigital number, since it uses as much as digits as its factorization.

1555412861401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30924383.

The product of its (nonzero) digits is 192000, while the sum is 43.

The spelling of 1555412861401 in words is "one trillion, five hundred fifty-five billion, four hundred twelve million, eight hundred sixty-one thousand, four hundred one".