261676542103120 has 80 divisors (see below), whose sum is σ = 644997314815488. Its totient is φ = 98556465692160.

The previous prime is 261676542103051. The next prime is 261676542103139. The reversal of 261676542103120 is 21301245676162.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×261676542103120² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1425783034 + ... + 1425966553.

Almost surely, 2^{261676542103120} is an apocalyptic number.

261676542103120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261676542103120 is an abundant number, since it is smaller than the sum of its proper divisors (383320772712368).

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

261676542103120 is a wasteful number, since it uses less digits than its factorization.

261676542103120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851749668 (or 2851749662 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

Adding to 261676542103120 its reverse (21301245676162), we get a palindrome (282977787779282).

The spelling of 261676542103120 in words is "two hundred sixty-one trillion, six hundred seventy-six billion, five hundred forty-two million, one hundred three thousand, one hundred twenty".