260978061938 has 16 divisors (see below), whose sum is σ = 434293233120. Its totient is φ = 116615774400.

The previous prime is 260978061931. The next prime is 260978061943. The reversal of 260978061938 is 839160879062.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is not an unprimeable number, because it can be changed into a prime (260978061931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100529543 + ... + 100532138.

It is an arithmetic number, because the mean of its divisors is an integer number (27143327070).

Almost surely, 2^260978061938 is an apocalyptic number.

260978061938 is a deficient number, since it is larger than the sum of its proper divisors (173315171182).

260978061938 is a wasteful number, since it uses less digits than its factorization.

260978061938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201061753.

The product of its (nonzero) digits is 7838208, while the sum is 59.

The spelling of 260978061938 in words is "two hundred sixty billion, nine hundred seventy-eight million, sixty-one thousand, nine hundred thirty-eight".