5661037697976 has 192 divisors, whose sum is σ = 16885101149280. Its totient is φ = 1770738278400.

The previous prime is 5661037697947. The next prime is 5661037697983. The reversal of 5661037697976 is 6797967301665.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10883026 + ... + 11391326.

Almost surely, 2^{5661037697976} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5661037697976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8442550574640).

5661037697976 is an abundant number, since it is smaller than the sum of its proper divisors (11224063451304).

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

5661037697976 is a wasteful number, since it uses less digits than its factorization.

5661037697976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508676 (or 508660 counting only the distinct ones).

The product of its (nonzero) digits is 540101520, while the sum is 72.

The spelling of 5661037697976 in words is "five trillion, six hundred sixty-one billion, thirty-seven million, six hundred ninety-seven thousand, nine hundred seventy-six".