131921561748 has 48 divisors (see below), whose sum is σ = 338105617920. Its totient is φ = 39848158944.

The previous prime is 131921561743. The next prime is 131921561749. The reversal of 131921561748 is 847165129131.

It is a junction number, because it is equal to n+sod(n) for n = 131921561697 and 131921561706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131921561743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12573090 + ... + 12583577.

It is an arithmetic number, because the mean of its divisors is an integer number (7043867040).

Almost surely, 2^131921561748 is an apocalyptic number.

It is an amenable number.

131921561748 is an abundant number, since it is smaller than the sum of its proper divisors (206184056172).

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

131921561748 is a wasteful number, since it uses less digits than its factorization.

131921561748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25156716 (or 25156714 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The spelling of 131921561748 in words is "one hundred thirty-one billion, nine hundred twenty-one million, five hundred sixty-one thousand, seven hundred forty-eight".