15320772156144 has 320 divisors, whose sum is σ = 50857492912128. Its totient is φ = 3862881792000.

The previous prime is 15320772156139. The next prime is 15320772156229. The reversal of 15320772156144 is 44165127702351.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 15320772156093 and 15320772156102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 190941954 + ... + 191022174.

Almost surely, 2^{15320772156144} is an apocalyptic number.

15320772156144 is a gapful number since it is divisible by the number (14) 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 15320772156144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25428746456064).

15320772156144 is an abundant number, since it is smaller than the sum of its proper divisors (35536720755984).

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

15320772156144 is a wasteful number, since it uses less digits than its factorization.

15320772156144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82176 (or 82170 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

Adding to 15320772156144 its reverse (44165127702351), we get a palindrome (59485899858495).

The spelling of 15320772156144 in words is "fifteen trillion, three hundred twenty billion, seven hundred seventy-two million, one hundred fifty-six thousand, one hundred forty-four".