261042148630 has 32 divisors (see below), whose sum is σ = 474114583584. Its totient is φ = 103475237376.

The previous prime is 261042148597. The next prime is 261042148657. The reversal of 261042148630 is 36841240162.

261042148630 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×261042148630² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 261042148630.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8134677 + ... + 8166703.

It is an arithmetic number, because the mean of its divisors is an integer number (14816080737).

Almost surely, 2^261042148630 is an apocalyptic number.

261042148630 is a deficient number, since it is larger than the sum of its proper divisors (213072434954).

261042148630 is a wasteful number, since it uses less digits than its factorization.

261042148630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39360.

The product of its (nonzero) digits is 55296, while the sum is 37.

Adding to 261042148630 its reverse (36841240162), we get a palindrome (297883388792).

The spelling of 261042148630 in words is "two hundred sixty-one billion, forty-two million, one hundred forty-eight thousand, six hundred thirty".