2051026694640 has 2880 divisors, whose sum is σ = 9602745384960. Its totient is φ = 382714675200.

The previous prime is 2051026694597. The next prime is 2051026694659. The reversal of 2051026694640 is 464966201502.

2051026694640 is a `hidden beast` number, since 2 + 0 + 510 + 2 + 6 + 6 + 94 + 6 + 40 = 666.

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 575 ways as a sum of consecutive naturals, for example, 23045243716 + ... + 23045243804.

It is an arithmetic number, because the mean of its divisors is an integer number (3334286592).

Almost surely, 2^{2051026694640} is an apocalyptic number.

2051026694640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051026694640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4801372692480).

2051026694640 is an abundant number, since it is smaller than the sum of its proper divisors (7551718690320).

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

2051026694640 is a wasteful number, since it uses less digits than its factorization.

2051026694640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 2051026694640 in words is "two trillion, fifty-one billion, twenty-six million, six hundred ninety-four thousand, six hundred forty".