1331435255501 has 8 divisors (see below), whose sum is σ = 1480106686464. Its totient is φ = 1189371443760.

The previous prime is 1331435255443. The next prime is 1331435255539. The reversal of 1331435255501 is 1055525341331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331435255501 is a prime.

It is a super-2 number, since 2×1331435255501² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331435255581) 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, 1651904381 + ... + 1651905186.

It is an arithmetic number, because the mean of its divisors is an integer number (185013335808).

Almost surely, 2^{1331435255501} is an apocalyptic number.

It is an amenable number.

1331435255501 is a deficient number, since it is larger than the sum of its proper divisors (148671430963).

1331435255501 is a wasteful number, since it uses less digits than its factorization.

1331435255501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303809611.

The product of its (nonzero) digits is 135000, while the sum is 38.

The spelling of 1331435255501 in words is "one trillion, three hundred thirty-one billion, four hundred thirty-five million, two hundred fifty-five thousand, five hundred one".