1354661782545 has 32 divisors (see below), whose sum is σ = 2307170908800. Its totient is φ = 676770107904.

The previous prime is 1354661782493. The next prime is 1354661782547. The reversal of 1354661782545 is 5452871664531.

It is not a de Polignac number, because 1354661782545 - 2¹¹ = 1354661780497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (1354661782547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26678002 + ... + 26728731.

It is an arithmetic number, because the mean of its divisors is an integer number (72099090900).

Almost surely, 2^{1354661782545} is an apocalyptic number.

1354661782545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1354661782545 is a deficient number, since it is larger than the sum of its proper divisors (952509126255).

1354661782545 is a wasteful number, since it uses less digits than its factorization.

1354661782545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53406849.

The product of its digits is 24192000, while the sum is 57.

The spelling of 1354661782545 in words is "one trillion, three hundred fifty-four billion, six hundred sixty-one million, seven hundred eighty-two thousand, five hundred forty-five".