139666775040 has 1408 divisors, whose sum is σ = 581046681600. Its totient is φ = 31531991040.

The previous prime is 139666774991. The next prime is 139666775089. The reversal of 139666775040 is 40577666931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139666774991) and next prime (139666775089).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1281346506 + ... + 1281346614.

It is an arithmetic number, because the mean of its divisors is an integer number (412675200).

Almost surely, 2^139666775040 is an apocalyptic number.

139666775040 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 139666775040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290523340800).

139666775040 is an abundant number, since it is smaller than the sum of its proper divisors (441379906560).

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

139666775040 is a wasteful number, since it uses less digits than its factorization.

139666775040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 139666775040 in words is "one hundred thirty-nine billion, six hundred sixty-six million, seven hundred seventy-five thousand, forty".