2151511260450 has 96 divisors (see below), whose sum is σ = 5427130230720. Its totient is φ = 563913676800.

The previous prime is 2151511260449. The next prime is 2151511260511. The reversal of 2151511260450 is 540621151512.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60525082 + ... + 60560618.

It is an arithmetic number, because the mean of its divisors is an integer number (56532606570).

Almost surely, 2^{2151511260450} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151511260450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2713565115360).

2151511260450 is an abundant number, since it is smaller than the sum of its proper divisors (3275618970270).

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

2151511260450 is a wasteful number, since it uses less digits than its factorization.

2151511260450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42452 (or 42447 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

The spelling of 2151511260450 in words is "two trillion, one hundred fifty-one billion, five hundred eleven million, two hundred sixty thousand, four hundred fifty".