961403782143 has 64 divisors (see below), whose sum is σ = 1549128499200. Its totient is φ = 518487594240.

The previous prime is 961403782117. The next prime is 961403782147. The reversal of 961403782143 is 341287304169.

It is a Cunningham number, because it is equal to 980512²-1.

It is not a de Polignac number, because 961403782143 - 2⁸ = 961403781887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 961403782092 and 961403782101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961403782147) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20567428 + ... + 20614118.

It is an arithmetic number, because the mean of its divisors is an integer number (24205132800).

Almost surely, 2^961403782143 is an apocalyptic number.

961403782143 is a deficient number, since it is larger than the sum of its proper divisors (587724717057).

961403782143 is a wasteful number, since it uses less digits than its factorization.

961403782143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47292.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 961403782143 in words is "nine hundred sixty-one billion, four hundred three million, seven hundred eighty-two thousand, one hundred forty-three".