19555056252651 has 8 divisors (see below), whose sum is σ = 26073429097104. Its totient is φ = 13036693788320.

The previous prime is 19555056252619. The next prime is 19555056252653. The reversal of 19555056252651 is 15625265055591.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19555056252651 - 2⁵ = 19555056252619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19555056252591 and 19555056252600.

It is not an unprimeable number, because it can be changed into a prime (19555056252653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4861585 + ... + 7921181.

It is an arithmetic number, because the mean of its divisors is an integer number (3259178637138).

Almost surely, 2^{19555056252651} is an apocalyptic number.

19555056252651 is a deficient number, since it is larger than the sum of its proper divisors (6518372844453).

19555056252651 is a wasteful number, since it uses less digits than its factorization.

19555056252651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190061.

The product of its (nonzero) digits is 20250000, while the sum is 57.

The spelling of 19555056252651 in words is "nineteen trillion, five hundred fifty-five billion, fifty-six million, two hundred fifty-two thousand, six hundred fifty-one".