1532621263640 has 64 divisors (see below), whose sum is σ = 3493083484800. Its totient is φ = 605108994048.

The previous prime is 1532621263619. The next prime is 1532621263669. The reversal of 1532621263640 is 463621262351.

It is a super-2 number, since 2×1532621263640² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 10853972 + ... + 10994268.

It is an arithmetic number, because the mean of its divisors is an integer number (54579429450).

Almost surely, 2^{1532621263640} is an apocalyptic number.

1532621263640 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 1532621263640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1746541742400).

1532621263640 is an abundant number, since it is smaller than the sum of its proper divisors (1960462221160).

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

1532621263640 is a wasteful number, since it uses less digits than its factorization.

1532621263640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143844 (or 143840 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 1532621263640 in words is "one trillion, five hundred thirty-two billion, six hundred twenty-one million, two hundred sixty-three thousand, six hundred forty".