19767961625055 has 32 divisors (see below), whose sum is σ = 36519780670464. Its totient is φ = 8943619746816.

The previous prime is 19767961625051. The next prime is 19767961625117. The reversal of 19767961625055 is 55052616976791.

It is not a de Polignac number, because 19767961625055 - 2² = 19767961625051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19767961625051) 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, 970434667 + ... + 970455036.

It is an arithmetic number, because the mean of its divisors is an integer number (1141243145952).

Almost surely, 2^{19767961625055} is an apocalyptic number.

19767961625055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19767961625055 is a deficient number, since it is larger than the sum of its proper divisors (16751819045409).

19767961625055 is a wasteful number, since it uses less digits than its factorization.

19767961625055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940889815.

The product of its (nonzero) digits is 214326000, while the sum is 69.

The spelling of 19767961625055 in words is "nineteen trillion, seven hundred sixty-seven billion, nine hundred sixty-one million, six hundred twenty-five thousand, fifty-five".