2051378016 has 48 divisors (see below), whose sum is σ = 5668286400. Its totient is φ = 647803008.

The previous prime is 2051377987. The next prime is 2051378033. The reversal of 2051378016 is 6108731502.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 560506 + ... + 564153.

It is an arithmetic number, because the mean of its divisors is an integer number (118089300).

Almost surely, 2^2051378016 is an apocalyptic number.

It is an amenable number.

2051378016 is an abundant number, since it is smaller than the sum of its proper divisors (3616908384).

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

2051378016 is a wasteful number, since it uses less digits than its factorization.

2051378016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124691 (or 1124683 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 2051378016 is about 45292.1407751941. The cubic root of 2051378016 is about 1270.6186697826.

The spelling of 2051378016 in words is "two billion, fifty-one million, three hundred seventy-eight thousand, sixteen".