1650661501536 has 120 divisors (see below), whose sum is σ = 4883620064400. Its totient is φ = 546925623552.

The previous prime is 1650661501499. The next prime is 1650661501597. The reversal of 1650661501536 is 6351051660561.

1650661501536 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 6 + 61 + 50 + 1 + 536 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1650661501491 and 1650661501500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1473811 + ... + 2339538.

It is an arithmetic number, because the mean of its divisors is an integer number (40696833870).

Almost surely, 2^{1650661501536} is an apocalyptic number.

1650661501536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1650661501536 is an abundant number, since it is smaller than the sum of its proper divisors (3232958562864).

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

1650661501536 is a wasteful number, since it uses less digits than its factorization.

1650661501536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813538 (or 3813521 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 1650661501536 in words is "one trillion, six hundred fifty billion, six hundred sixty-one million, five hundred one thousand, five hundred thirty-six".