35561620641 has 16 divisors (see below), whose sum is σ = 48668618880. Its totient is φ = 23083486080.

The previous prime is 35561620639. The next prime is 35561620651. The reversal of 35561620641 is 14602616553.

It is not a de Polignac number, because 35561620641 - 2¹ = 35561620639 is a prime.

It is a super-2 number, since 2×35561620641² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 35561620641.

It is not an unprimeable number, because it can be changed into a prime (35561620631) 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, 225526 + ... + 349263.

It is an arithmetic number, because the mean of its divisors is an integer number (3041788680).

Almost surely, 2^35561620641 is an apocalyptic number.

It is an amenable number.

35561620641 is a deficient number, since it is larger than the sum of its proper divisors (13106998239).

35561620641 is a wasteful number, since it uses less digits than its factorization.

35561620641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575336.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 35561620641 in words is "thirty-five billion, five hundred sixty-one million, six hundred twenty thousand, six hundred forty-one".