1555711341272 has 32 divisors (see below), whose sum is σ = 3225727763280. Its totient is φ = 697454645760.

The previous prime is 1555711341253. The next prime is 1555711341277. The reversal of 1555711341272 is 2721431175551.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555711341277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121079453 + ... + 121092300.

Almost surely, 2^{1555711341272} is an apocalyptic number.

It is an amenable number.

1555711341272 is an abundant number, since it is smaller than the sum of its proper divisors (1670016422008).

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

1555711341272 is a wasteful number, since it uses less digits than its factorization.

1555711341272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242171843 (or 242171839 counting only the distinct ones).

The product of its digits is 294000, while the sum is 44.

The spelling of 1555711341272 in words is "one trillion, five hundred fifty-five billion, seven hundred eleven million, three hundred forty-one thousand, two hundred seventy-two".