2011510012154 has 16 divisors (see below), whose sum is σ = 3194838545256. Its totient is φ = 946567065600.

The previous prime is 2011510012123. The next prime is 2011510012159. The reversal of 2011510012154 is 4512100151102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1689550229929 + 321959782225 = 1299827^2 + 567415^2 .

It is not an unprimeable number, because it can be changed into a prime (2011510012159) 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, 482924 + ... + 2063064.

Almost surely, 2^{2011510012154} is an apocalyptic number.

2011510012154 is a deficient number, since it is larger than the sum of its proper divisors (1183328533102).

2011510012154 is a wasteful number, since it uses less digits than its factorization.

2011510012154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617601.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 2011510012154 its reverse (4512100151102), we get a palindrome (6523610163256).

The spelling of 2011510012154 in words is "two trillion, eleven billion, five hundred ten million, twelve thousand, one hundred fifty-four".