10405618642 has 4 divisors (see below), whose sum is σ = 15608427966. Its totient is φ = 5202809320.

The previous prime is 10405618637. The next prime is 10405618651. The reversal of 10405618642 is 24681650401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9260405361 + 1145213281 = 96231^2 + 33841^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2601404659 + ... + 2601404662.

Almost surely, 2^10405618642 is an apocalyptic number.

10405618642 is a deficient number, since it is larger than the sum of its proper divisors (5202809324).

10405618642 is an equidigital number, since it uses as much as digits as its factorization.

10405618642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5202809323.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 10405618642 in words is "ten billion, four hundred five million, six hundred eighteen thousand, six hundred forty-two".