2921863889088 has 84 divisors (see below), whose sum is σ = 8815784537560. Its totient is φ = 922693856256.

The previous prime is 2921863889081. The next prime is 2921863889101. The reversal of 2921863889088 is 8809883681292.

It is a happy number.

2921863889088 is a `hidden beast` number, since 2 + 9 + 2 + 1 + 86 + 388 + 90 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (2921863889081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133480645 + ... + 133502532.

Almost surely, 2^{2921863889088} is an apocalyptic number.

It is an amenable number.

2921863889088 is an abundant number, since it is smaller than the sum of its proper divisors (5893920648472).

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

2921863889088 is a wasteful number, since it uses less digits than its factorization.

2921863889088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266983214 (or 266983201 counting only the distinct ones).

The product of its (nonzero) digits is 191102976, while the sum is 72.

The spelling of 2921863889088 in words is "two trillion, nine hundred twenty-one billion, eight hundred sixty-three million, eight hundred eighty-nine thousand, eighty-eight".