1963729255278 has 64 divisors (see below), whose sum is σ = 4509343383552. Its totient is φ = 558463857120.

The previous prime is 1963729255277. The next prime is 1963729255283. The reversal of 1963729255278 is 8725529273691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1963729255277) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85134775 + ... + 85157837.

It is an arithmetic number, because the mean of its divisors is an integer number (70458490368).

Almost surely, 2^{1963729255278} is an apocalyptic number.

1963729255278 is an abundant number, since it is smaller than the sum of its proper divisors (2545614128274).

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

1963729255278 is a wasteful number, since it uses less digits than its factorization.

1963729255278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32389.

The product of its digits is 114307200, while the sum is 66.

The spelling of 1963729255278 in words is "one trillion, nine hundred sixty-three billion, seven hundred twenty-nine million, two hundred fifty-five thousand, two hundred seventy-eight".