16961449245 has 192 divisors, whose sum is σ = 32937891840. Its totient is φ = 7413120000.

The previous prime is 16961449229. The next prime is 16961449259. The reversal of 16961449245 is 54294416961.

It is a happy number.

It is not a de Polignac number, because 16961449245 - 2⁴ = 16961449229 is a prime.

It is a super-2 number, since 2×16961449245² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 67575370 + ... + 67575620.

It is an arithmetic number, because the mean of its divisors is an integer number (171551520).

Almost surely, 2^16961449245 is an apocalyptic number.

16961449245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16961449245 is a deficient number, since it is larger than the sum of its proper divisors (15976442595).

16961449245 is a wasteful number, since it uses less digits than its factorization.

16961449245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 375 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The spelling of 16961449245 in words is "sixteen billion, nine hundred sixty-one million, four hundred forty-nine thousand, two hundred forty-five".