2151400305420 has 36 divisors (see below), whose sum is σ = 6525914260320. Its totient is φ = 573706748064.

The previous prime is 2151400305407. The next prime is 2151400305493. The reversal of 2151400305420 is 245030041512.

2151400305420 is a `hidden beast` number, since 2 + 1 + 51 + 40 + 0 + 30 + 542 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2151400305420² (a number of 25 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 5976111780 + ... + 5976112139.

It is an arithmetic number, because the mean of its divisors is an integer number (181275396120).

Almost surely, 2^{2151400305420} is an apocalyptic number.

2151400305420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151400305420 is an abundant number, since it is smaller than the sum of its proper divisors (4374513954900).

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

2151400305420 is a wasteful number, since it uses less digits than its factorization.

2151400305420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11952223934 (or 11952223929 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 2151400305420 its reverse (245030041512), we get a palindrome (2396430346932).

The spelling of 2151400305420 in words is "two trillion, one hundred fifty-one billion, four hundred million, three hundred five thousand, four hundred twenty".