138851844740 has 48 divisors (see below), whose sum is σ = 336543911424. Its totient is φ = 47134992000.

The previous prime is 138851844697. The next prime is 138851844773. The reversal of 138851844740 is 47448158831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4895756 + ... + 4924035.

It is an arithmetic number, because the mean of its divisors is an integer number (7011331488).

Almost surely, 2^138851844740 is an apocalyptic number.

138851844740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138851844740 is an abundant number, since it is smaller than the sum of its proper divisors (197692066684).

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

138851844740 is a wasteful number, since it uses less digits than its factorization.

138851844740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9819908 (or 9819906 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 53.

The spelling of 138851844740 in words is "one hundred thirty-eight billion, eight hundred fifty-one million, eight hundred forty-four thousand, seven hundred forty".