2101054977 has 48 divisors (see below), whose sum is σ = 3737740800. Its totient is φ = 1161851040.

The previous prime is 2101054961. The next prime is 2101054981. The reversal of 2101054977 is 7794501012.

It is a happy number.

2101054977 is a `hidden beast` number, since 2 + 101 + 0 + 549 + 7 + 7 = 666.

It is not a de Polignac number, because 2101054977 - 2⁴ = 2101054961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101054937) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15399 + ... + 66627.

It is an arithmetic number, because the mean of its divisors is an integer number (77869600).

Almost surely, 2^2101054977 is an apocalyptic number.

2101054977 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2101054977 is a deficient number, since it is larger than the sum of its proper divisors (1636685823).

2101054977 is a wasteful number, since it uses less digits than its factorization.

2101054977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51283 (or 51270 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 2101054977 is about 45837.2662470178. The cubic root of 2101054977 is about 1280.7935706062.

Adding to 2101054977 its reverse (7794501012), we get a palindrome (9895555989).

The spelling of 2101054977 in words is "two billion, one hundred one million, fifty-four thousand, nine hundred seventy-seven".