155226562540 has 288 divisors, whose sum is σ = 402593909760. Its totient is φ = 49149974016.

The previous prime is 155226562531. The next prime is 155226562553. The reversal of 155226562540 is 45265622551.

155226562540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 988704142 + ... + 988704298.

It is an arithmetic number, because the mean of its divisors is an integer number (1397895520).

Almost surely, 2^155226562540 is an apocalyptic number.

155226562540 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 155226562540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201296954880).

155226562540 is an abundant number, since it is smaller than the sum of its proper divisors (247367347220).

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

155226562540 is a wasteful number, since it uses less digits than its factorization.

155226562540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 155226562540 in words is "one hundred fifty-five billion, two hundred twenty-six million, five hundred sixty-two thousand, five hundred forty".