139145400000 has 504 divisors, whose sum is σ = 520341258528. Its totient is φ = 35481600000.

The previous prime is 139145399971. The next prime is 139145400001. The reversal of 139145400000 is 4541931.

It is a super-2 number, since 2×139145400000² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139145400001) 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, 41398320 + ... + 41401680.

It is an arithmetic number, because the mean of its divisors is an integer number (1032423132).

Almost surely, 2^139145400000 is an apocalyptic number.

139145400000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139145400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260170629264).

139145400000 is an abundant number, since it is smaller than the sum of its proper divisors (381195858528).

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

139145400000 is an equidigital number, since it uses as much as digits as its factorization.

139145400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427 (or 3394 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 139145400000 its reverse (4541931), we get a palindrome (139149941931).

The spelling of 139145400000 in words is "one hundred thirty-nine billion, one hundred forty-five million, four hundred thousand".