105551501649 has 32 divisors (see below), whose sum is σ = 155952953856. Its totient is φ = 62962437120.

The previous prime is 105551501609. The next prime is 105551501659. The reversal of 105551501649 is 946105155501.

It is a happy number.

It is not a de Polignac number, because 105551501649 - 2¹⁶ = 105551436113 is a prime.

It is a super-2 number, since 2×105551501649² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105551501649.

It is not an unprimeable number, because it can be changed into a prime (105551501609) 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, 2671174 + ... + 2710400.

It is an arithmetic number, because the mean of its divisors is an integer number (4873529808).

Almost surely, 2^105551501649 is an apocalyptic number.

It is an amenable number.

105551501649 is a deficient number, since it is larger than the sum of its proper divisors (50401452207).

105551501649 is a wasteful number, since it uses less digits than its factorization.

105551501649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40525.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 105551501649 in words is "one hundred five billion, five hundred fifty-one million, five hundred one thousand, six hundred forty-nine".