140409775611378 has 144 divisors (see below), whose sum is σ = 381237338827800. Its totient is φ = 37018995052032.

The previous prime is 140409775611373. The next prime is 140409775611379. The reversal of 140409775611378 is 873116577904041.

It is a happy number.

140409775611378 is a `hidden beast` number, since 1 + 4 + 0 + 4 + 0 + 9 + 7 + 7 + 5 + 611 + 3 + 7 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 68980283760969 + 71429491850409 = 8305437^2 + 8451597^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (140409775611373) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 32951676 + ... + 36967992.

Almost surely, 2^{140409775611378} is an apocalyptic number.

140409775611378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140409775611378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190618669413900).

140409775611378 is an abundant number, since it is smaller than the sum of its proper divisors (240827563216422).

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

140409775611378 is a wasteful number, since it uses less digits than its factorization.

140409775611378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019401 (or 4019391 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 63.

The spelling of 140409775611378 in words is "one hundred forty trillion, four hundred nine billion, seven hundred seventy-five million, six hundred eleven thousand, three hundred seventy-eight".