137771920572 has 96 divisors (see below), whose sum is σ = 377969786880. Its totient is φ = 38506855680.

The previous prime is 137771920571. The next prime is 137771920619. The reversal of 137771920572 is 275029177731.

It is a super-2 number, since 2×137771920572² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137771920571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2163378 + ... + 2226150.

It is an arithmetic number, because the mean of its divisors is an integer number (3937185280).

Almost surely, 2^137771920572 is an apocalyptic number.

137771920572 is a gapful number since it is divisible by the number (12) 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 137771920572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188984893440).

137771920572 is an abundant number, since it is smaller than the sum of its proper divisors (240197866308).

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

137771920572 is a wasteful number, since it uses less digits than its factorization.

137771920572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64083 (or 64081 counting only the distinct ones).

The product of its (nonzero) digits is 1296540, while the sum is 51.

The spelling of 137771920572 in words is "one hundred thirty-seven billion, seven hundred seventy-one million, nine hundred twenty thousand, five hundred seventy-two".