1378511022735 has 96 divisors (see below), whose sum is σ = 3109961952000. Its totient is φ = 572887667520.

The previous prime is 1378511022719. The next prime is 1378511022787. The reversal of 1378511022735 is 5372201158731.

1378511022735 is a `hidden beast` number, since 1 + 378 + 5 + 1 + 1 + 0 + 2 + 273 + 5 = 666.

It is not a de Polignac number, because 1378511022735 - 2⁴ = 1378511022719 is a prime.

It is a super-4 number, since 4×1378511022735⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9399585 + ... + 9545114.

It is an arithmetic number, because the mean of its divisors is an integer number (32395437000).

Almost surely, 2^{1378511022735} is an apocalyptic number.

1378511022735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1378511022735 is an abundant number, since it is smaller than the sum of its proper divisors (1731450929265).

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

1378511022735 is a wasteful number, since it uses less digits than its factorization.

1378511022735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18944738 (or 18944725 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 1378511022735 in words is "one trillion, three hundred seventy-eight billion, five hundred eleven million, twenty-two thousand, seven hundred thirty-five".