693851382640 has 80 divisors (see below), whose sum is σ = 1750559269536. Its totient is φ = 254235571200.

The previous prime is 693851382617. The next prime is 693851382641. The reversal of 693851382640 is 46283158396.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693851382641) 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, 2410191 + ... + 2682670.

Almost surely, 2^693851382640 is an apocalyptic number.

It is an amenable number.

693851382640 is an abundant number, since it is smaller than the sum of its proper divisors (1056707886896).

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

693851382640 is a wasteful number, since it uses less digits than its factorization.

693851382640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5093018 (or 5093012 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 55.

It can be divided in two parts, 69385 and 1382640, that added together give a square (1452025 = 1205²).

The spelling of 693851382640 in words is "six hundred ninety-three billion, eight hundred fifty-one million, three hundred eighty-two thousand, six hundred forty".