140778033668 has 24 divisors (see below), whose sum is σ = 260886574872. Its totient is φ = 66240065024.

The previous prime is 140778033647. The next prime is 140778033689. The reversal of 140778033668 is 866330877041.

It is an interprime number because it is at equal distance from previous prime (140778033647) and next prime (140778033689).

It can be written as a sum of positive squares in 4 ways, for example, as 78222021124 + 62556012544 = 279682^2 + 250112^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424430 + ... + 679482.

It is an arithmetic number, because the mean of its divisors is an integer number (10870273953).

Almost surely, 2^140778033668 is an apocalyptic number.

It is an amenable number.

140778033668 is a deficient number, since it is larger than the sum of its proper divisors (120108541204).

140778033668 is a wasteful number, since it uses less digits than its factorization.

140778033668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263191 (or 263189 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 140778033668 in words is "one hundred forty billion, seven hundred seventy-eight million, thirty-three thousand, six hundred sixty-eight".