6131783821648 has 10 divisors (see below), whose sum is σ = 11880331154474. Its totient is φ = 3065891910816.

The previous prime is 6131783821633. The next prime is 6131783821661. The reversal of 6131783821648 is 8461283871316.

It can be written as a sum of positive squares in only one way, i.e., 5822723433024 + 309060388624 = 2413032^2 + 555932^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6131783821592 and 6131783821601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191618244411 + ... + 191618244442.

Almost surely, 2^{6131783821648} is an apocalyptic number.

It is an amenable number.

6131783821648 is a deficient number, since it is larger than the sum of its proper divisors (5748547332826).

6131783821648 is a wasteful number, since it uses less digits than its factorization.

6131783821648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383236488861 (or 383236488855 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 58.

The spelling of 6131783821648 in words is "six trillion, one hundred thirty-one billion, seven hundred eighty-three million, eight hundred twenty-one thousand, six hundred forty-eight".