2631198144240 has 80 divisors (see below), whose sum is σ = 9063015837600. Its totient is φ = 701652837888.

The previous prime is 2631198144229. The next prime is 2631198144269. The reversal of 2631198144240 is 424418911362.

2631198144240 is a `hidden beast` number, since 2 + 6 + 31 + 198 + 1 + 4 + 424 + 0 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609071485 + ... + 609075804.

It is an arithmetic number, because the mean of its divisors is an integer number (113287697970).

Almost surely, 2^{2631198144240} is an apocalyptic number.

2631198144240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2631198144240 is an abundant number, since it is smaller than the sum of its proper divisors (6431817693360).

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

2631198144240 is a wasteful number, since it uses less digits than its factorization.

2631198144240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218147311 (or 1218147299 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 2631198144240 in words is "two trillion, six hundred thirty-one billion, one hundred ninety-eight million, one hundred forty-four thousand, two hundred forty".