2698988149640 has 16 divisors (see below), whose sum is σ = 6072723336780. Its totient is φ = 1079595259840.

The previous prime is 2698988149621. The next prime is 2698988149657. The reversal of 2698988149640 is 469418898962.

It can be written as a sum of positive squares in 2 ways, for example, as 2501566109956 + 197422039684 = 1581634^2 + 444322^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33737351831 + ... + 33737351910.

Almost surely, 2^{2698988149640} is an apocalyptic number.

2698988149640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2698988149640 is an abundant number, since it is smaller than the sum of its proper divisors (3373735187140).

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

2698988149640 is a wasteful number, since it uses less digits than its factorization.

2698988149640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67474703752 (or 67474703748 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 74.

The spelling of 2698988149640 in words is "two trillion, six hundred ninety-eight billion, nine hundred eighty-eight million, one hundred forty-nine thousand, six hundred forty".