1961327900102 has 4 divisors (see below), whose sum is σ = 2941991850156. Its totient is φ = 980663950050.

The previous prime is 1961327900101. The next prime is 1961327900117. The reversal of 1961327900102 is 2010097231691.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1961327900102² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1961327900102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961327900101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490331975024 + ... + 490331975027.

It is an arithmetic number, because the mean of its divisors is an integer number (735497962539).

Almost surely, 2^{1961327900102} is an apocalyptic number.

1961327900102 is a deficient number, since it is larger than the sum of its proper divisors (980663950054).

1961327900102 is an equidigital number, since it uses as much as digits as its factorization.

1961327900102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980663950053.

The product of its (nonzero) digits is 40824, while the sum is 41.

The spelling of 1961327900102 in words is "one trillion, nine hundred sixty-one billion, three hundred twenty-seven million, nine hundred thousand, one hundred two".