1631744391060 has 1728 divisors, whose sum is σ = 6664808666880. Its totient is φ = 320031129600.

The previous prime is 1631744390993. The next prime is 1631744391103. The reversal of 1631744391060 is 601934471361.

1631744391060 is a `hidden beast` number, since 1 + 63 + 1 + 7 + 443 + 91 + 0 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1631744390997 and 1631744391015.

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, 15249947527 + ... + 15249947633.

It is an arithmetic number, because the mean of its divisors is an integer number (3856949460).

Almost surely, 2^{1631744391060} is an apocalyptic number.

1631744391060 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 1631744391060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3332404333440).

1631744391060 is an abundant number, since it is smaller than the sum of its proper divisors (5033064275820).

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

1631744391060 is a wasteful number, since it uses less digits than its factorization.

1631744391060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 1631744391060 in words is "one trillion, six hundred thirty-one billion, seven hundred forty-four million, three hundred ninety-one thousand, sixty".