1961558091202 has 16 divisors (see below), whose sum is σ = 3022211187072. Its totient is φ = 954160527600.

The previous prime is 1961558091151. The next prime is 1961558091257. The reversal of 1961558091202 is 2021908551691.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898924 + ... + 2175127.

It is an arithmetic number, because the mean of its divisors is an integer number (188888199192).

Almost surely, 2^{1961558091202} is an apocalyptic number.

1961558091202 is a deficient number, since it is larger than the sum of its proper divisors (1060653095870).

1961558091202 is a wasteful number, since it uses less digits than its factorization.

1961558091202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082713.

The product of its (nonzero) digits is 388800, while the sum is 49.

The spelling of 1961558091202 in words is "one trillion, nine hundred sixty-one billion, five hundred fifty-eight million, ninety-one thousand, two hundred two".