5261145012 has 18 divisors (see below), whose sum is σ = 13299005538. Its totient is φ = 1753714992.

The previous prime is 5261144981. The next prime is 5261145031. The reversal of 5261145012 is 2105411625.

5261145012 is a `hidden beast` number, since 5 + 2 + 611 + 45 + 0 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3318451236 + 1942693776 = 57606^2 + 44076^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73071423 + ... + 73071494.

It is an arithmetic number, because the mean of its divisors is an integer number (738833641).

Almost surely, 2^5261145012 is an apocalyptic number.

It is an amenable number.

5261145012 is an abundant number, since it is smaller than the sum of its proper divisors (8037860526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5261145012 is a wasteful number, since it uses less digits than its factorization.

5261145012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146142927 (or 146142922 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 5261145012 is about 72533.7508474503. The cubic root of 5261145012 is about 1739.2423058562.

Adding to 5261145012 its reverse (2105411625), we get a palindrome (7366556637).

The spelling of 5261145012 in words is "five billion, two hundred sixty-one million, one hundred forty-five thousand, twelve".