1651995296640 has 768 divisors, whose sum is σ = 6534529485120. Its totient is φ = 380972040192.

The previous prime is 1651995296599. The next prime is 1651995296681. The reversal of 1651995296640 is 466925991561.

1651995296640 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 9 + 9 + 529 + 66 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (1651995296599) and next prime (1651995296681).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 288959062 + ... + 288964778.

Almost surely, 2^{1651995296640} is an apocalyptic number.

1651995296640 is a gapful number since it is divisible by the number (10) 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 1651995296640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3267264742560).

1651995296640 is an abundant number, since it is smaller than the sum of its proper divisors (4882534188480).

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

1651995296640 is a wasteful number, since it uses less digits than its factorization.

1651995296640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5999 (or 5984 counting only the distinct ones).

The product of its (nonzero) digits is 31492800, while the sum is 63.

The spelling of 1651995296640 in words is "one trillion, six hundred fifty-one billion, nine hundred ninety-five million, two hundred ninety-six thousand, six hundred forty".