13485147501781 has 16 divisors (see below), whose sum is σ = 14902982978688. Its totient is φ = 12136991961600.

The previous prime is 13485147501769. The next prime is 13485147501811. The reversal of 13485147501781 is 18710574158431.

It is a cyclic number.

It is not a de Polignac number, because 13485147501781 - 2³⁷ = 13347708548309 is a prime.

It is a super-2 number, since 2×13485147501781² (a number of 27 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 (13485147502781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2849760 + ... + 5923801.

It is an arithmetic number, because the mean of its divisors is an integer number (931436436168).

Almost surely, 2^{13485147501781} is an apocalyptic number.

It is an amenable number.

13485147501781 is a deficient number, since it is larger than the sum of its proper divisors (1417835476907).

13485147501781 is a wasteful number, since it uses less digits than its factorization.

13485147501781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8777532.

The product of its (nonzero) digits is 3763200, while the sum is 55.

The spelling of 13485147501781 in words is "thirteen trillion, four hundred eighty-five billion, one hundred forty-seven million, five hundred one thousand, seven hundred eighty-one".