3257780087694 has 16 divisors (see below), whose sum is σ = 7107883827840. Its totient is φ = 987206087160.

The previous prime is 3257780087647. The next prime is 3257780087699. The reversal of 3257780087694 is 4967800877523.

It is a happy number.

It is a super-2 number, since 2×3257780087694² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 49360304359 = 3257780087694 / (3 + 2 + 5 + 7 + 7 + 8 + 0 + 0 + 8 + 7 + 6 + 9 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3257780087699) 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, 24680152114 + ... + 24680152245.

It is an arithmetic number, because the mean of its divisors is an integer number (444242739240).

Almost surely, 2^{3257780087694} is an apocalyptic number.

3257780087694 is an abundant number, since it is smaller than the sum of its proper divisors (3850103740146).

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

3257780087694 is a wasteful number, since it uses less digits than its factorization.

3257780087694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49360304375.

The product of its (nonzero) digits is 142248960, while the sum is 66.

The spelling of 3257780087694 in words is "three trillion, two hundred fifty-seven billion, seven hundred eighty million, eighty-seven thousand, six hundred ninety-four".