137861226720 has 768 divisors, whose sum is σ = 570607994880. Its totient is φ = 30433148928.

The previous prime is 137861226719. The next prime is 137861226743. The reversal of 137861226720 is 27622168731.

137861226720 is a `hidden beast` number, since 1 + 3 + 7 + 8 + 612 + 2 + 6 + 7 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 126130494 + ... + 126131586.

It is an arithmetic number, because the mean of its divisors is an integer number (742979160).

Almost surely, 2^137861226720 is an apocalyptic number.

137861226720 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 137861226720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285303997440).

137861226720 is an abundant number, since it is smaller than the sum of its proper divisors (432746768160).

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

137861226720 is a wasteful number, since it uses less digits than its factorization.

137861226720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1250 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 137861226720 in words is "one hundred thirty-seven billion, eight hundred sixty-one million, two hundred twenty-six thousand, seven hundred twenty".