1616151001605 has 64 divisors (see below), whose sum is σ = 2967760373760. Its totient is φ = 735690219264.

The previous prime is 1616151001601. The next prime is 1616151001631. The reversal of 1616151001605 is 5061001516161.

It is not a de Polignac number, because 1616151001605 - 2² = 1616151001601 is a prime.

It is a super-2 number, since 2×1616151001605² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616151001601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24031687 + ... + 24098843.

It is an arithmetic number, because the mean of its divisors is an integer number (46371255840).

Almost surely, 2^{1616151001605} is an apocalyptic number.

1616151001605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1616151001605 is a deficient number, since it is larger than the sum of its proper divisors (1351609372155).

1616151001605 is a wasteful number, since it uses less digits than its factorization.

1616151001605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68138.

The product of its (nonzero) digits is 5400, while the sum is 33.

Adding to 1616151001605 its reverse (5061001516161), we get a palindrome (6677152517766).

The spelling of 1616151001605 in words is "one trillion, six hundred sixteen billion, one hundred fifty-one million, one thousand, six hundred five".