961749048778 has 8 divisors (see below), whose sum is σ = 1648712655072. Its totient is φ = 412178163756.

The previous prime is 961749048737. The next prime is 961749048853. The reversal of 961749048778 is 877840947169.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×961749048778² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34348180300 + ... + 34348180327.

It is an arithmetic number, because the mean of its divisors is an integer number (206089081884).

Almost surely, 2^961749048778 is an apocalyptic number.

961749048778 is a deficient number, since it is larger than the sum of its proper divisors (686963606294).

961749048778 is a wasteful number, since it uses less digits than its factorization.

961749048778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68696360636.

The product of its (nonzero) digits is 170698752, while the sum is 70.

The spelling of 961749048778 in words is "nine hundred sixty-one billion, seven hundred forty-nine million, forty-eight thousand, seven hundred seventy-eight".