1650612121137 has 48 divisors (see below), whose sum is σ = 2728757790720. Its totient is φ = 941844917376.

The previous prime is 1650612121091. The next prime is 1650612121187. The reversal of 1650612121137 is 7311212160561.

1650612121137 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 612 + 1 + 2 + 1 + 1 + 37 = 666.

It is not a de Polignac number, because 1650612121137 - 2⁸ = 1650612120881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1650612121187) 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, 139415664 + ... + 139427502.

It is an arithmetic number, because the mean of its divisors is an integer number (56849120640).

Almost surely, 2^{1650612121137} is an apocalyptic number.

It is an amenable number.

1650612121137 is a deficient number, since it is larger than the sum of its proper divisors (1078145669583).

1650612121137 is a wasteful number, since it uses less digits than its factorization.

1650612121137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14862 (or 14859 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

Adding to 1650612121137 its reverse (7311212160561), we get a palindrome (8961824281698).

The spelling of 1650612121137 in words is "one trillion, six hundred fifty billion, six hundred twelve million, one hundred twenty-one thousand, one hundred thirty-seven".