2151403613840 has 40 divisors (see below), whose sum is σ = 5386783666488. Its totient is φ = 794364410880.

The previous prime is 2151403613839. The next prime is 2151403613867. The reversal of 2151403613840 is 483163041512.

It can be written as a sum of positive squares in 4 ways, for example, as 26525985424 + 2124877628416 = 162868^2 + 1457696^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2151403613794 and 2151403613803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034327621 + ... + 1034329700.

Almost surely, 2^{2151403613840} is an apocalyptic number.

2151403613840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151403613840 is an abundant number, since it is smaller than the sum of its proper divisors (3235380052648).

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

2151403613840 is a wasteful number, since it uses less digits than its factorization.

2151403613840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068657347 (or 2068657341 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 2151403613840 in words is "two trillion, one hundred fifty-one billion, four hundred three million, six hundred thirteen thousand, eight hundred forty".