261356363034 has 16 divisors (see below), whose sum is σ = 562921397472. Its totient is φ = 80417342448.

The previous prime is 261356363003. The next prime is 261356363041. The reversal of 261356363034 is 430363653162.

It is a happy number.

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, 1675361224 + ... + 1675361379.

It is an arithmetic number, because the mean of its divisors is an integer number (35182587342).

Almost surely, 2^261356363034 is an apocalyptic number.

261356363034 is an abundant number, since it is smaller than the sum of its proper divisors (301565034438).

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

261356363034 is a wasteful number, since it uses less digits than its factorization.

261356363034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350722621.

The product of its (nonzero) digits is 699840, while the sum is 42.

The spelling of 261356363034 in words is "two hundred sixty-one billion, three hundred fifty-six million, three hundred sixty-three thousand, thirty-four".