3172628894640 has 40 divisors (see below), whose sum is σ = 9835149574128. Its totient is φ = 846034371840.

The previous prime is 3172628894627. The next prime is 3172628894741. The reversal of 3172628894640 is 464988262713.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 6609643291 + ... + 6609643770.

Almost surely, 2^{3172628894640} is an apocalyptic number.

3172628894640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3172628894640 is an abundant number, since it is smaller than the sum of its proper divisors (6662520679488).

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

3172628894640 is a wasteful number, since it uses less digits than its factorization.

3172628894640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13219287077 (or 13219287071 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 60.

The spelling of 3172628894640 in words is "three trillion, one hundred seventy-two billion, six hundred twenty-eight million, eight hundred ninety-four thousand, six hundred forty".