3545278231640 has 32 divisors (see below), whose sum is σ = 8059111865280. Its totient is φ = 1403491587072.

The previous prime is 3545278231631. The next prime is 3545278231669. The reversal of 3545278231640 is 461328725453.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456861872 + ... + 456869631.

It is an arithmetic number, because the mean of its divisors is an integer number (251847245790).

Almost surely, 2^{3545278231640} is an apocalyptic number.

It is an amenable number.

3545278231640 is an abundant number, since it is smaller than the sum of its proper divisors (4513833633640).

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

3545278231640 is a wasteful number, since it uses less digits than its factorization.

3545278231640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913731611 (or 913731607 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 3545278231640 in words is "three trillion, five hundred forty-five billion, two hundred seventy-eight million, two hundred thirty-one thousand, six hundred forty".