1421716851090 has 192 divisors, whose sum is σ = 3868474401792. Its totient is φ = 375661540800.

The previous prime is 1421716851077. The next prime is 1421716851097. The reversal of 1421716851090 is 901586171241.

1421716851090 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 71 + 68 + 510 + 9 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1421716851097) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 236516185 + ... + 236522195.

It is an arithmetic number, because the mean of its divisors is an integer number (20148304176).

Almost surely, 2^{1421716851090} is an apocalyptic number.

1421716851090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421716851090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1934237200896).

1421716851090 is an abundant number, since it is smaller than the sum of its proper divisors (2446757550702).

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

1421716851090 is a wasteful number, since it uses less digits than its factorization.

1421716851090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6907 (or 6895 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The spelling of 1421716851090 in words is "one trillion, four hundred twenty-one billion, seven hundred sixteen million, eight hundred fifty-one thousand, ninety".