102787130649 has 8 divisors (see below), whose sum is σ = 156628008640. Its totient is φ = 58735503216.

The previous prime is 102787130627. The next prime is 102787130657. The reversal of 102787130649 is 946031787201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102787130649 - 2⁹ = 102787130137 is a prime.

It is a super-2 number, since 2×102787130649² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102787130598 and 102787130607.

It is not an unprimeable number, because it can be changed into a prime (102787130659) 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, 2447312614 + ... + 2447312655.

It is an arithmetic number, because the mean of its divisors is an integer number (19578501080).

Almost surely, 2^102787130649 is an apocalyptic number.

It is an amenable number.

102787130649 is a deficient number, since it is larger than the sum of its proper divisors (53840877991).

102787130649 is an equidigital number, since it uses as much as digits as its factorization.

102787130649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4894625279.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 102787130649 in words is "one hundred two billion, seven hundred eighty-seven million, one hundred thirty thousand, six hundred forty-nine".