7663331540 has 24 divisors (see below), whose sum is σ = 16199578752. Its totient is φ = 3045031200.

The previous prime is 7663331539. The next prime is 7663331551. The reversal of 7663331540 is 451333667.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7663331494 and 7663331503.

It is a congruent 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, 1265744 + ... + 1271783.

It is an arithmetic number, because the mean of its divisors is an integer number (674982448).

Almost surely, 2^7663331540 is an apocalyptic number.

It is an amenable number.

7663331540 is an abundant number, since it is smaller than the sum of its proper divisors (8536247212).

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

7663331540 is a wasteful number, since it uses less digits than its factorization.

7663331540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537687 (or 2537685 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 38.

The square root of 7663331540 is about 87540.4565900818. The cubic root of 7663331540 is about 1971.5412659546.

The spelling of 7663331540 in words is "seven billion, six hundred sixty-three million, three hundred thirty-one thousand, five hundred forty".