1522938899664 has 640 divisors, whose sum is σ = 5733713018880. Its totient is φ = 376006219776.

The previous prime is 1522938899623. The next prime is 1522938899693. The reversal of 1522938899664 is 4669988392251.

1522938899664 is a `hidden beast` number, since 1 + 522 + 9 + 3 + 8 + 8 + 9 + 96 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 1522938899592 and 1522938899601.

It is a congruent number.

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, 42478354 + ... + 42514190.

It is an arithmetic number, because the mean of its divisors is an integer number (8958926592).

Almost surely, 2^{1522938899664} is an apocalyptic number.

1522938899664 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 1522938899664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2866856509440).

1522938899664 is an abundant number, since it is smaller than the sum of its proper divisors (4210774119216).

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

1522938899664 is a wasteful number, since it uses less digits than its factorization.

1522938899664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35944 (or 35932 counting only the distinct ones).

The product of its digits is 403107840, while the sum is 72.

The spelling of 1522938899664 in words is "one trillion, five hundred twenty-two billion, nine hundred thirty-eight million, eight hundred ninety-nine thousand, six hundred sixty-four".