2139940290068 has 24 divisors (see below), whose sum is σ = 4281929467200. Its totient is φ = 916678219968.

The previous prime is 2139940290001. The next prime is 2139940290079. The reversal of 2139940290068 is 8600920499312.

It is a congruent number.

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, 18234098 + ... + 18351081.

It is an arithmetic number, because the mean of its divisors is an integer number (178413727800).

Almost surely, 2^{2139940290068} is an apocalyptic number.

2139940290068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2139940290068 is an abundant number, since it is smaller than the sum of its proper divisors (2141989177132).

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

2139940290068 is a wasteful number, since it uses less digits than its factorization.

2139940290068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36587279 (or 36587277 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 2139940290068 in words is "two trillion, one hundred thirty-nine billion, nine hundred forty million, two hundred ninety thousand, sixty-eight".