1961747205250 has 192 divisors, whose sum is σ = 4530819151872. Its totient is φ = 632803248000.

The previous prime is 1961747205239. The next prime is 1961747205331. The reversal of 1961747205250 is 525027471691.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 1961747205194 and 1961747205203.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17129679 + ... + 17243821.

It is an arithmetic number, because the mean of its divisors is an integer number (23598016416).

Almost surely, 2^{1961747205250} is an apocalyptic number.

1961747205250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1961747205250 is an abundant number, since it is smaller than the sum of its proper divisors (2569071946622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1961747205250 is a wasteful number, since it uses less digits than its factorization.

1961747205250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114258 (or 114241 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 1961747205250 in words is "one trillion, nine hundred sixty-one billion, seven hundred forty-seven million, two hundred five thousand, two hundred fifty".