1623849499272 has 512 divisors, whose sum is σ = 5636924375040. Its totient is φ = 376078464000.

The previous prime is 1623849499177. The next prime is 1623849499313. The reversal of 1623849499272 is 2729949483261.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 478868697 + ... + 478872087.

It is an arithmetic number, because the mean of its divisors is an integer number (11009617920).

Almost surely, 2^{1623849499272} is an apocalyptic number.

1623849499272 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 1623849499272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2818462187520).

1623849499272 is an abundant number, since it is smaller than the sum of its proper divisors (4013074875768).

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

1623849499272 is a wasteful number, since it uses less digits than its factorization.

1623849499272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105 (or 4101 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 66.

The spelling of 1623849499272 in words is "one trillion, six hundred twenty-three billion, eight hundred forty-nine million, four hundred ninety-nine thousand, two hundred seventy-two".