101520053440 has 224 divisors, whose sum is σ = 263610547200. Its totient is φ = 37016678400.

The previous prime is 101520053429. The next prime is 101520053447. The reversal of 101520053440 is 44350025101.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (101520053447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169482261 + ... + 169482859.

It is an arithmetic number, because the mean of its divisors is an integer number (1176832800).

Almost surely, 2^101520053440 is an apocalyptic number.

101520053440 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 101520053440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131805273600).

101520053440 is an abundant number, since it is smaller than the sum of its proper divisors (162090493760).

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

101520053440 is a wasteful number, since it uses less digits than its factorization.

101520053440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 101520053440 its reverse (44350025101), we get a palindrome (145870078541).

The spelling of 101520053440 in words is "one hundred one billion, five hundred twenty million, fifty-three thousand, four hundred forty".