5261668780 has 24 divisors (see below), whose sum is σ = 11075041152. Its totient is φ = 2099803392.

The previous prime is 5261668777. The next prime is 5261668799. The reversal of 5261668780 is 878661625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295132 + ... + 312451.

It is an arithmetic number, because the mean of its divisors is an integer number (461460048).

Almost surely, 2^5261668780 is an apocalyptic number.

It is an amenable number.

5261668780 is an abundant number, since it is smaller than the sum of its proper divisors (5813372372).

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

5261668780 is a wasteful number, since it uses less digits than its factorization.

5261668780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608025 (or 608023 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 5261668780 is about 72537.3612699001. The cubic root of 5261668780 is about 1739.3000201138.

It can be divided in two parts, 5261 and 668780, that added together give a square (674041 = 821²).

The spelling of 5261668780 in words is "five billion, two hundred sixty-one million, six hundred sixty-eight thousand, seven hundred eighty".