1650638510976 has 1536 divisors, whose sum is σ = 6161351616000. Its totient is φ = 386266890240.

The previous prime is 1650638510971. The next prime is 1650638511047. The reversal of 1650638510976 is 6790158360561.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650638510971) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4986823131 + ... + 4986823461.

It is an arithmetic number, because the mean of its divisors is an integer number (4011296625).

Almost surely, 2^{1650638510976} is an apocalyptic number.

1650638510976 is a gapful number since it is divisible by the number (16) 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 1650638510976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3080675808000).

1650638510976 is an abundant number, since it is smaller than the sum of its proper divisors (4510713105024).

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

1650638510976 is a wasteful number, since it uses less digits than its factorization.

1650638510976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 57.

The spelling of 1650638510976 in words is "one trillion, six hundred fifty billion, six hundred thirty-eight million, five hundred ten thousand, nine hundred seventy-six".