20034177621550 has 96 divisors (see below), whose sum is σ = 38615156453952. Its totient is φ = 7729287521280.

The previous prime is 20034177621529. The next prime is 20034177621583. The reversal of 20034177621550 is 5512677143002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20034177621497 and 20034177621506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37126272 + ... + 37662028.

It is an arithmetic number, because the mean of its divisors is an integer number (402241213062).

Almost surely, 2^{20034177621550} is an apocalyptic number.

20034177621550 is a deficient number, since it is larger than the sum of its proper divisors (18580978832402).

20034177621550 is a wasteful number, since it uses less digits than its factorization.

20034177621550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536062 (or 536057 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 20034177621550 in words is "twenty trillion, thirty-four billion, one hundred seventy-seven million, six hundred twenty-one thousand, five hundred fifty".