1506661651616 has 48 divisors (see below), whose sum is σ = 3406208772960. Its totient is φ = 648801665280.

The previous prime is 1506661651513. The next prime is 1506661651619. The reversal of 1506661651616 is 6161561666051.

It is a super-2 number, since 2×1506661651616² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1506661651619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112632491 + ... + 112645866.

It is an arithmetic number, because the mean of its divisors is an integer number (70962682770).

Almost surely, 2^{1506661651616} is an apocalyptic number.

1506661651616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1506661651616 is an abundant number, since it is smaller than the sum of its proper divisors (1899547121344).

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

1506661651616 is a wasteful number, since it uses less digits than its factorization.

1506661651616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225278397 (or 225278389 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 1506661651616 in words is "one trillion, five hundred six billion, six hundred sixty-one million, six hundred fifty-one thousand, six hundred sixteen".