1615742414220 has 96 divisors (see below), whose sum is σ = 4939641423360. Its totient is φ = 391355228160.

The previous prime is 1615742414201. The next prime is 1615742414233. The reversal of 1615742414220 is 224142475161.

It is a super-2 number, since 2×1615742414220² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300640 + ... + 1822599.

It is an arithmetic number, because the mean of its divisors is an integer number (51454598160).

Almost surely, 2^{1615742414220} is an apocalyptic number.

1615742414220 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 1615742414220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2469820711680).

1615742414220 is an abundant number, since it is smaller than the sum of its proper divisors (3323899009140).

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

1615742414220 is a wasteful number, since it uses less digits than its factorization.

1615742414220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124415 (or 2124413 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

Adding to 1615742414220 its reverse (224142475161), we get a palindrome (1839884889381).

The spelling of 1615742414220 in words is "one trillion, six hundred fifteen billion, seven hundred forty-two million, four hundred fourteen thousand, two hundred twenty".