16535369970 has 288 divisors, whose sum is σ = 54600436800. Its totient is φ = 3580101504.

The previous prime is 16535369953. The next prime is 16535369971. The reversal of 16535369970 is 7996353561.

16535369970 is a `hidden beast` number, since 1 + 6 + 535 + 36 + 9 + 9 + 70 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16535369971) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2258676 + ... + 2265984.

It is an arithmetic number, because the mean of its divisors is an integer number (189584850).

Almost surely, 2^16535369970 is an apocalyptic number.

16535369970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16535369970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27300218400).

16535369970 is an abundant number, since it is smaller than the sum of its proper divisors (38065066830).

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

16535369970 is a wasteful number, since it uses less digits than its factorization.

16535369970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7364 (or 7345 counting only the distinct ones).

The product of its (nonzero) digits is 4592700, while the sum is 54.

The spelling of 16535369970 in words is "sixteen billion, five hundred thirty-five million, three hundred sixty-nine thousand, nine hundred seventy".