3561973557 has 8 divisors (see below), whose sum is σ = 4766081184. Its totient is φ = 2366257488.

The previous prime is 3561973553. The next prime is 3561973573. The reversal of 3561973557 is 7553791653.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3561973557 - 2² = 3561973553 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561973553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2096898 + ... + 2098595.

It is an arithmetic number, because the mean of its divisors is an integer number (595760148).

Almost surely, 2^3561973557 is an apocalyptic number.

It is an amenable number.

3561973557 is a deficient number, since it is larger than the sum of its proper divisors (1204107627).

3561973557 is a wasteful number, since it uses less digits than its factorization.

3561973557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195779.

The product of its digits is 2976750, while the sum is 51.

The square root of 3561973557 is about 59682.2717144715. The cubic root of 3561973557 is about 1527.2034519408.

The spelling of 3561973557 in words is "three billion, five hundred sixty-one million, nine hundred seventy-three thousand, five hundred fifty-seven".